The 2011 season was the Kansas City Chiefs' 42nd in the National Football League (NFL), their 52nd overall and their third under the head coach/general manager tandem of Todd Haley and Scott Pioli. A 10–6 record in their 2010 season lent high expectations to their 2011 season, but the Chiefs suffered reversed fortunes. A season-ending hand injury to their starting quarterback Matt Cassel in their eighth game of the season proved especially significant. After a 4–4 record with Cassel at the helm, the Chiefs staggered to a 7–9 win–loss record by season end and failed to make the playoffs. 
The Chiefs training camp began on July 29 in St. Joseph, Missouri. The Chiefs played their first preseason game on August 12 against the Tampa Bay Buccaneers. On September 11, the Chiefs opened their regular season against the Buffalo Bills. They did not earn their first win until Week 4 against the Minnesota Vikings. After starting the season 5–8, head coach Todd Haley was fired after a 37–10 loss to the New York Jets. Haley was replaced by defensive coordinator Romeo Crennel on an interim basis for the remainder of the season.[1] Haley became the second Chiefs coach to be fired during a season; the first was Paul Wiggin in 1977. 
One bright spot of the season is the first game after Crennel took over as interim head coach. The Chiefs achieved an upset win against the then 13–0 defending Super Bowl champion Green Bay Packers to ruin their perfect season hopes; that loss would prove to be the only one the 2011 Packers suffered in their 15–1 regular season record. 
  Offseason
 Coaching changes
  Free agency
  Draft
   - ^[a]  The Chiefs traded their original first-round selection (#21) to the Cleveland Browns in exchange for the first-round selection (#27) which the Browns had previously acquired from Atlanta, and Cleveland's third-round selection (#70 overall).
- ^[b]  The Baltimore Ravens originally held the 26th pick, but they did not submit their pick in the allotted ten minutes which allowed Kansas City to pick ahead of them.
- ^[c]  The Chiefs traded their original sixth-round selection (#187 overall) and DT Alex Magee to the Tampa Bay Buccaneers in exchange for the fifth-round selection which the Buccaneers had previously acquired from Denver.
- ^[d]  The Chiefs swapped fifth-round selections with the Detroit Lions (the Chiefs originally held the #154 overall selection), after the Lions were found guilty of tampering with Chiefs' players.
- ^[e]  Compensatory selection.
Staff
  2011 Kansas City Chiefs staff   |  | Front office  Head coaches  Offensive coaches  |  |  | Defensive coaches Special teams coaches  Strength and conditioning   Strength and conditioning – Mike ClarkAssistant strength and conditioning – Brent Salazar
 | 
 Final roster
  Preseason
 Schedule
  Game summaries
 Week 1: vs. Tampa Bay Buccaneers
   Week 1: Tampa Bay Buccaneers at Kansas City Chiefs – Game summary
  at Arrowhead Stadium, Kansas City, Missouri 
        | Game information | 
  |      | First quarter  TB – Josh Freeman 5-yard run (Connor Barth kick), 10:26. Buccaneers 7–0. Drive: 2 plays, 9 yards, 0:50.TB – Connor Barth 25-yard field goal, 4:35. Buccaneers 10–0. Drive: 8 plays, 42 yards, 4:24.
 Second quarter  TB – Connor Barth 40-yard field goal, 11:18. Buccaneers 13–0. Drive: 12 plays, 52 yards, 6:09.TB – Tyler Palko sacked in end zone by Dekoda Watson and Michael Bennett for a Safety, 4:48. Buccaneers 15–0.
 Third quarter  Fourth quarter  TB – Jacob Rogers 46-yard field goal, 11:44. Buccaneers 25–0. Drive: 6 plays, 22 yards, 2:54.
 | Top passers  TB – Josh Johnson – 7/12, 108 yards, TDKC – Tyler Palko – 4/8, 34 yards
 Top rushers  TB – Josh Johnson – 5 rushes, 57 yardsKC – Jackie Battle – 13 rushes, 40 yards
 Top receivers  TB – Dezmon Briscoe – 4 receptions, 60 yardsKC – Jackie Battle – 3 receptions, 27 yards
    |  | 
   Week 2: at Baltimore Ravens
      | Game information | 
  |      | First quarter  KC – Ryan Succop 31-yard field goal, 10:57. Chiefs 3–0. Drive: 4 plays, 2 yards, 0:54.BAL – Billy Cundiff 49-yard field goal, 5:55. Tied 3–3. Drive: 12 plays, 55 yards, 5:02.
 Second quarter  BAL – Ray Rice 26-yard run (Billy Cundiff kick), 3:10. Ravens 10–3. Drive: 6 plays, 81 yards, 2:25.KC – Terrance Copper 4-yard pass from Tyler Palko (Ryan Succop kick), 0:12. Tied 10–10. Drive: 9 plays, 80 yards, 2:58.
 Third quarter  KC – Ryan Succop 30-yard field goal, 6:58. Chiefs 13–10. Drive: 12 plays, 43 yards, 5:39.
 Fourth quarter  BAL – Jalen Parmele 10-yard run (Billy Cundiff kick), 7:16. Ravens 17–13. Drive: 5 plays, 65 yards, 1:47.BAL – Tyrod Taylor 5-yard run (Jake Harfman kick), 1:59. Ravens 24–13. Drive: 6 plays, 73 yards, 3:34.BAL – Anthony Allen 1-yard run (Billy Cundiff kick), 0:05. Ravens 31–13. Drive: 4 plays, 41 yards, 1:13.
 | Top passers  KC – Tyler Palko – 8/13, 95 yards, TDBAL – Joe Flacco – 12/24, 124 yards
 Top rushers  KC – Jackie Battle – 8 rushes, 29 yardsBAL – Ray Rice – 7 rushes, 44 yards, TD
 Top receivers     |  | 
   Week 3: vs. St. Louis Rams
   Week 3: St. Louis Rams at Kansas City Chiefs – Game summary
  at Arrowhead Stadium, Kansas City, Missouri 
        | Game information | 
  |      | First quarter  Second quarter  KC – Ryan Succop 26-yard field goal, 10:33. Rams 14–3. Drive: 4 plays, –1 yard, 0:56.
 Third quarter  KC – Cody Slate 32-yard pass from Ricky Stanzi (Ryan Succop kick), 0:08. Rams 14–10. Drive: 9 plays, 81 yards, 4:52.
 Fourth quarter  | Top passers  STL – Sam Bradford – 9/16, 95 yards, 2 TD, INTKC – Ricky Stanzi – 8/14, 121 yards, TD
 Top rushers  Top receivers  STL – Lance Kendricks – 2 receptions, 26 yards, TDKC – Cody Slate – 2 receptions, 50 yards, TD
    |  | 
   Week 4: at Green Bay Packers
      | Game information | 
  |      | First quarter  Second quarter  Third quarter  GB – Mason Crosby 43-yard field goal, 7:58. Chiefs 16–10. Drive: 4 plays, 1 yard, 0:57.GB – Mason Crosby 32-yard field goal, 5:48. Chiefs 16–13. Drive: 4 plays, 0 yards, 1:59.GB – Vic So'oto 33-yard interception return (Mason Crosby kick), 4:20. Packers 20–16.
 Fourth quarter  KC – Ryan Succop 31-yard field goal, 11:29. Packers 20–19. Drive: 4 plays, 3 yards, 2:08.
 | Top passers  KC – Tyler Palko – 18/29, 163 yards, TD, 2 INTGB – Graham Harrell – 3/5, 21 yards
 Top rushers  Top receivers  KC – Dwayne Bowe – 8 receptions, 85 yards, TDGB – Tom Crabtree – 2 receptions, 13 yards, TD
    |  | 
   Regular season
 Schedule
  Note: Intra-division opponents are in bold text. 
 Game summaries
 Week 1: vs. Buffalo Bills
      | Game information | 
  |      | First quarter  Second quarter  BUF – Rian Lindell 29-yard field goal, 6:42. Bills 17–0. Drive: 9 plays, 50 yards, 5:04.BUF – Rian Lindell 38-yard field goal, 5:38. Bills 20–0. Drive: 4 plays, 1 yard, 0:49.KC – Jamaal Charles 6-yard pass from Matt Cassel (Ryan Succop kick), 1:46 Bills 20–7. Drive: 11 plays, 81 yards, 3:52.
 Third quarter  BUF – Scott Chandler 11-yard pass from Ryan Fitzpatrick (Rian Lindell kick), 4:19. Bills 27–7. Drive: 8 plays, 59 yards, 5:52.BUF – Donald Jones 4-yard pass from Ryan Fitzpatrick (Rian Lindell kick), 0:14. Bills 34–7. Drive: 6 plays, 32 yards, 2:50.
 Fourth quarter  BUF – C. J. Spiller 9-yard run (Rian Lindell kick), 11:50. Bills 41–7. Drive: 4 plays, 28 yards, 2:11.
 | Top passers  BUF – Ryan Fitzpatrick – 17/25, 208 yards, 4 TDKC – Matt Cassel – 22/36, 119 yards, TD, INT
 Top rushers  Top receivers  BUF – Scott Chandler – 5 receptions, 63 yards, 2 TDKC – Dexter McCluster – 5 receptions, 25 yards
    |  | 
   Week 2: at Detroit Lions
      | Game information | 
  |      | First quarter  Second quarter  DET – Tony Scheffler 36-yard pass from Matt Stafford (Jason Hanson kick), 5:50. Lions 14–3. Drive: 2 plays, 45 yards, 0:28.DET – Jason Hanson 51-yard field goal, 1:07. Lions 17–3. Drive: 7 plays, 40 yards, 3:24.DET – Jason Hanson 28-yard field goal, 0:02. Lions 20–3. Drive: 5 plays, 29 yards, 0:24
 Third quarter  DET – Calvin Johnson 1-yard pass from Matt Stafford (Jason Hanson kick), 1:17. Lions 27–3. Drive: 10 plays, 84 yards, 4:53.
 Fourth quarter  DET – Jahvid Best 9-yard pass from Matt Stafford (Jason Hanson kick), 14:49. Lions 34–3. Drive: 5 plays, 23 yards, 1:11.DET – Jahvid Best 1-yard run (Jason Hanson kick), 11:31. Lions 41–3. Drive: 6 plays, 18 yards, 2:37.DET – Keiland Williams 1-yard run (Jason Hanson kick), 5:06. Lions 48–3. Drive: 7 plays, 34 yards, 3:40.
 | Top passers  KC – Matt Cassel – 15/22, 133 yards, 3 INTDET – Matthew Stafford – 23/39, 294 yards, 4 TD, INT
 Top rushers  KC – Dexter McCluster – 8 rushes, 51 yardsDET – Jahvid Best – 16 rushes, 57 yards, TD
 Top receivers     |  | 
   Week 3: at San Diego Chargers
      | Game information | 
  |      | First quarter  Second quarter  SD – Ryan Mathews 2-yard run (Nick Novak kick), 12:45. Chargers 7–0. Drive: 15 plays, 72 yards, 7:07.SD – Nick Novak 35-yard field goal, 0:28. Chargers 10–0. Drive: 13 plays, 73 yards, 3:09.
 Third quarter  KC – Dwayne Bowe 4-yard pass from Matt Cassel (Ryan Succop kick), 11:21. Chargers 10–7. Drive: 6 plays, 42 yards, 1:40.SD – Ryan Mathews 4-yard run (Nick Novak kick), 7:32. Chargers 17–7. Drive: 7 plays, 80 yards, 3:49.
 Fourth quarter  KC – Ryan Succop 33-yard field goal, 12:57. Chargers 17–10. Drive: 18 plays, 58 yards, 9:35.SD – Nick Novak 41-yard field goal, 8:03. Chargers 20–10. Drive: 8 plays, 48 yards, 4:54.KC – Leonard Pope 1-yard pass from Matt Cassel (Ryan Succop kick), 4:58. Chargers 20–17. Drive: 9 plays, 80 yards, 3:05.
 | Top passers  KC – Matt Cassel – 17/24, 176 yards, 2 TD, INTSD – Philip Rivers – 24/38, 266 yards, 2 INT
 Top rushers  KC – Dexter McCluster – 9 rushes, 45 yardsSD – Ryan Mathews – 21 rushes, 98 yards, 2 TD
 Top receivers     |  | 
   Week 4: vs. Minnesota Vikings
   Week 4: Minnesota Vikings at Kansas City Chiefs – Game summary
  at Arrowhead Stadium, Kansas City, Missouri 
        | Game information | 
  |      | First quarter  Second quarter  KC – Ryan Succop 24-yard field goal, 5:15. Vikings 7–6. Drive: 7 plays, 59 yards, 2:32.KC – Ryan Succop 51-yard field goal, 0:00. Chiefs 9–7. Drive: 12 plays, 47 yards, 2:22.
 Third quarter  MIN – Ryan Longwell 33-yard field goal, 9:15. Vikings 10–9. Drive: 8 plays, 31 yards, 3:50.KC – Ryan Succop 54-yard field goal, 5:18. Chiefs 12–10. Drive: 9 plays, 57 yards, 3:57.KC – Ryan Succop 22-yard field goal, 0:09. Chiefs 15–10. Drive: 7 plays, 41 yards, 3:52.
 Fourth quarter  KC – Dwayne Bowe 52-yard pass from Matt Cassel (Ryan Succop kick), 13:51. Chiefs 22–10. Drive: 2 plays, 59 yards, 0:46.MIN – Michael Jenkins 1-yard pass from Donovan McNabb (Ryan Longwell kick), 5:50. Chiefs 22–17. Drive: 13 plays, 70 yards, 8:01.
 | Top passers  MIN – Donovan McNabb – 18/30, 202 yards, 2 TDKC – Matt Cassel – 18/29, 260 yards, TD
 Top rushers  Top receivers  MIN – Visanthe Shiancoe – 6 receptions, 58 yardsKC – Dwayne Bowe – 5 receptions, 107 yards, TD
    |  | 
   Week 5: at Indianapolis Colts
      | Game information | 
  |      | First quarter  Second quarter  IND – Adam Vinatieri 53-yard field goal, 12:23. Colts 10–0. Drive: 8 plays, 45 yards, 2:29.IND – Pierre Garçon 67-yard pass from Curtis Painter (Adam Vinatieri kick), 11:13. Colts 17–0. Drive: 1 play, 67 yards, 0:10.KC – Dwayne Bowe 41-yard pass from Matt Cassel (Ryan Succop kick), 5:11. Colts 17–7. Drive: 6 plays, 70 yards, 2:57.IND – Delone Carter 3-yard run (Adam Vinatieri kick), 1:09. Colts 24–7. Drive: 8 plays, 80 yards, 4:02.KC – Steve Breaston 16-yard pass from Matt Cassel (Ryan Succop kick), 0:13. Colts 24–14. Drive: 6 plays, 80 yards, 0:56.
 Third quarter  KC – Dwayne Bowe 5-yard pass from Matt Cassel (Ryan Succop kick), 0:40. Colts 24–21. Drive: 12 plays, 93 yards, 6:07.
 Fourth quarter  KC – Steve Breaston 11-yard pass from Matt Cassel (Ryan Succop kick), 5:15. Chiefs 28–24. Drive: 9 plays, 54 yards, 4:39.
 | Top passers  KC – Matt Cassel – 21/29, 257 yards, 4 TDIND – Curtis Painter – 15/27, 277 yards, 2 TD
 Top rushers  Top receivers  KC – Dwayne Bowe – 7 receptions, 128 yards, 2 TDIND – Pierre Garçon – 5 receptions, 125 yards, 2 TD
    |  | 
   Week 7: at Oakland Raiders
      | Game information | 
  |      | First quarter  Second quarter  Third quarter  KC – Javier Arenas 7-yard run (Ryan Succop kick), 10:25. Chiefs 21–0. Drive: 8 plays, 64 yards, 4:05.
 Fourth quarter  KC – Brandon Flowers 58-yard interception return (Ryan Succop kick), 10:25. Chiefs 28–0.
 | Top passers  Top rushers  Top receivers     |  | 
   Week 8: vs. San Diego Chargers
   Week 8: San Diego Chargers at Kansas City Chiefs – Game summary
  at Arrowhead Stadium, Kansas City, Missouri 
        | Game information | 
  |      | First quarter  KC – Ryan Succop 36-yard field goal, 9:04. Chiefs 3–0. Drive: 10 plays, 49 yards, 4:46.KC – Jon Baldwin 39-yard pass from Matt Cassel (Ryan Succop kick), 2:51. Chiefs 10–0. Drive: 4 plays, 77 yards, 2:01.
 Second quarter  SD − Nick Novak 44-yard field goal, 8:31. Chiefs 10–3. Drive: 6 plays, 46 yards, 3:04.KC – Ryan Succop 47-yard field goal, 0:03. Chiefs 13–3. Drive: 6 plays, 29 yards, 1:08.
 Third quarter  SD − Nick Novak 44-yard field goal, 8:10. Chiefs 13–6. Drive: 10 plays, 62 yards, 5:28.SD − Nick Novak 42-yard field goal, 6:01. Chiefs 13–9. Drive: 4 plays, 4 yards, 1:45.SD − Nick Novak 26-yard field goal, 1:45. Chiefs 13–12. Drive: 7 plays, 54 yards, 2:05.
 Fourth quarter  KC – Jackie Battle 1-yard run (Ryan Succop kick), 12:01. Chiefs 20–12. Drive: 10 plays, 74 yards, 4:44.SD – Curtis Brinkley 2-yard run (Philip Rivers–Curtis Brinkley pass), 7:11. Tied 20–20. Drive: 10 plays, 80 yards, 4:50.
 Overtime  KC – Ryan Succop 30-yard field goal, 5:16. Chiefs 23–20. Drive: 14 plays, 69 yards, 7:28.
 | Top passers  Top rushers  Top receivers     |  | 
   Week 9: vs. Miami Dolphins
   Week 9: Miami Dolphins at Kansas City Chiefs – Game summary
  at Arrowhead Stadium, Kansas City, Missouri 
 - Date: November 6
- Game time: 12:00 p.m. CST
- Game weather: Cloudy, 62 °F (17 °C)
- Game attendance: 72,263
- Referee: Walt Anderson
- TV announcers (CBS): Kevin Harlan and Solomon Wilcots
- Recap, Game Book
     | Game information | 
  |      | First quarter  Second quarter  MIA – Anthony Fasano 35-yard pass from Matt Moore (Dan Carpenter kick), 9:41. Dolphins 14–3. Drive: 3 plays, 78 yards, 1:39.
 Third quarter  MIA – Brandon Marshall 14-yard pass from Matt Moore (Dan Carpenter kick), 8:38. Dolphins 21–3. Drive: 4 plays, 61 yards, 1:17.MIA – Reggie Bush 28-yard run (Dan Carpenter kick), 6:41. Dolphins 28–3. Drive: 2 plays, 46 yards, 0:52.
 Fourth quarter  MIA – Dan Carpenter 42-yard field goal, 8:08. Dolphins 31–3. Drive: 12 plays, 73 yards, 6:49.
 | Top passers  MIA – Matt Moore – 17/23, 244 yards, 3 TDKC – Matt Cassel – 20/39, 253 yards
 Top rushers  MIA – Reggie Bush – 13 rushes, 92 yards, TDKC – Jackie Battle – 14 rushes, 40 yards
 Top receivers  MIA – Brandon Marshall – 8 receptions, 106 yards, TDKC – Steve Breaston – 7 receptions, 115 yards
    |  | 
   Week 10: vs. Denver Broncos
   Week 10: Denver Broncos at Kansas City Chiefs – Game summary
  at Arrowhead Stadium, Kansas City, Missouri 
        | Game information | 
  |      | First quarter  Second quarter  DEN – Matt Prater 38-yard field goal, 7:46. Broncos 10–0. Drive: 8 plays, 34 yards, 4:32.
 Third quarter  Fourth quarter  DEN – Eric Decker 56-yard pass from Tim Tebow (Matt Prater kick), 6:44. Broncos 17–7. Drive: 8 plays, 80 yards, 5:21.KC – Ryan Succop 32-yard field goal, 0:07. Broncos 17–10. Drive: 8 plays, 55 yards, 1:48.
 | Top passers  DEN – Tim Tebow – 2/8, 69 yards, TDKC – Matt Cassel – 13/28, 93 yards, TD
 Top rushers  Top receivers  DEN – Eric Decker – 1 receptions, 56 yards, TDKC – Dexter McCluster – 6 receptions, 48 yards
    |  | 
   Week 11: at New England Patriots
      | Game information | 
  |      | First quarter  KC – Ryan Succop 26-yard field goal, 1:30. Chiefs 3–0. Drive: 9 plays, 45 yards, 5:12.
 Second quarter  NE – Rob Gronkowski 52-yard pass from Tom Brady (Stephen Gostkowski kick), 4:18. Patriots 7–3. Drive: 6 plays, 85 yards, 3:18.NE – Stephen Gostkowski 21-yard field goal, 0:10. Patriots 10–3. Drive: 8 plays, 51 yards, 1:51.
 Third quarter  NE – Rob Gronkowski 19-yard pass from Tom Brady (Stephen Gostkowski kick), 10:27. Patriots 17–3. Drive: 9 plays, 85 yards, 4:33.NE – Julian Edelman 72-yard punt return (Stephen Gostkowski kick), 9:24. Patriots 24–3.NE – Stephen Gostkowski 19-yard field goal, 0:00. Patriots 27–3. Drive: 9 plays, 50 yards, 4:47.
 Fourth quarter  NE – Shane Vereen 4-yard run (Stephen Gostkowski kick), 1:01. Patriots 34–3. Drive: 14 plays, 62 yards, 5:31.
 | Top passers  KC – Tyler Palko – 24/37, 230 yards, 3 INTNE – Tom Brady – 15/27, 234 yards, 2 TD
 Top rushers  Top receivers  KC – Dwayne Bowe – 7 receptions, 87 yardsNE – Rob Gronkowski – 4 receptions, 96 yards, 2 TD
    |  | 
   Week 12: vs. Pittsburgh Steelers
   Week 12: Pittsburgh Steelers at Kansas City Chiefs – Game summary
  at Arrowhead Stadium, Kansas City, Missouri 
        | Game information | 
  |      | First quarter  KC – Ryan Succop 41-yard field goal, 10:40. Chiefs 3–0. Drive: 11 plays, 57 yards, 4:20.
 Second quarter  PIT – Shaun Suisham 21-yard field goal, 13:29. Tied 3–3. Drive: 4 plays, 4 yards, 1:31.PIT – Weslye Saunders 2-yard pass from Ben Roethlisberger (Shaun Suisham Kick), 10:53. Steelers 10–3. Drive: 5 plays, 24 yards, 2:29.KC – Ryan Succop 49-yard field goal, 4:30. Steelers 10–6. Drive: 9 plays, 38 yards, 3:20.PIT – Shaun Suisham 49-yard field goal, 0:00. Steelers 13–6. Drive: 9 plays, 47 yards, 4:30.
 Third quarter  Fourth quarter  KC – Ryan Succop 40-yard field goal, 7.11 Steelers 13–9. Drive: 13 plays, 70 yards, 6:11.
 | Top passers  PIT – Ben Roethlisberger – 21/31, 193 yards, TD, INTKC – Tyler Palko – 18/28, 167 yards, 3 INT
 Top rushers  Top receivers     |  | 
   Hoping to snap a three-game losing streak, the Chiefs went home for a Week 12 Sunday night duel with the Pittsburgh Steelers. Kansas City delivered the game's first punch in the opening quarter with a 41-yard field goal from kicker Ryan Succop. The Steelers would answer in the second quarter with kicker Shaun Suisham getting a 21-yard field goal, followed by quarterback Ben Roethlisberger completing a 2-yard touchdown pass to tight end Weslye Saunders. The Chiefs would reply with a 49-yard field goal from Succop, but Pittsburgh would close out the half with Suisham booting a 49-yard field goal. After a scoreless third quarter, Kansas City began to chip away at their deficit in the fourth quarter with a 40-yard field goal from Succop. However, the Steelers' defense held on to preserve the win. 
With the loss, the Chiefs fell to 4–7. 
 Week 13: at Chicago Bears
   Week 13: Kansas City Chiefs at Chicago Bears – Game summary
  at Soldier Field, Chicago, Illinois 
 - Date: December 4
- Game time: 12:00 p.m. CST
- Game weather: Cloudy, 46 °F (8 °C)
- Game attendance: 61,973
- Referee: Jerome Boger
- TV announcers (CBS): Kevin Harlan and Solomon Wilcots
- Recap, Game Book
     | Game information | 
  |      | First quarter  Second quarter  CHI – Robbie Gould 32-yard field goal, 9:49. Bears 3–0. Drive: 9 plays, 36 yards, 4:47.KC – Dexter McCluster 38-yard pass from Tyler Palko (Ryan Succop kick), 0:00. Chiefs 7–3. Drive: 16 plays, 87 yards, 4:16.
 Third quarter  KC – Ryan Succop 21-yard field goal, 6:16. Chiefs 10–3. Drive: 15 plays, 86 yards, 7:10.
 Fourth quarter  | Top passers  KC – Tyler Palko – 17/30, 157 yards, TDCHI – Caleb Hanie – 11/24, 133 yards, 3 INT
 Top rushers  KC – Dexter McCluster – 9 rushes, 61 yardsCHI – Marion Barber – 14 rushes, 44 yards
 Top receivers     |  | 
   Week 14: at New York Jets
      | Game information | 
  |      | First quarter  NYJ – Mark Sanchez 1-yard run (Nick Folk kick), 8:40. Jets 7–0. Drive: 11 plays, 77 yards, 6:20.KC – Ryan Succop 53-yard field goal, 4:36. Jets 7–3. Drive: 4 plays, 6 yards, 1:38.
 Second quarter  NYJ – Santonio Holmes 4-yard pass from Mark Sanchez (Nick Folk kick), 10:02. Jets 14–3. Drive: 3 plays, 38 yards, 1:04.NYJ – Shonn Greene 7-yard run (Nick Folk kick), 3:56. Jets 21–3. Drive: 9 plays, 69 yards, 4:27.NYJ – LaDainian Tomlinson 19-yard pass from Mark Sanchez (Nick Folk kick), 1:15. Jets 28–3. Drive: 4 plays, 35 yards, 1:17.
 Third quarter  NYJ – Mark Sanchez 3-yard run (Nick Folk kick), 4:06. Jets 35–3. Drive: 6 plays, 90 yards, 4:08.
 Fourth quarter  | Top passers  KC – Tyler Palko – 16/32, 195 yards, TD, INTNYJ – Mark Sanchez – 13/21, 181 yards, 2 TD
 Top rushers  KC – Jackie Battle – 10 rushes, 33 yardsNYJ – Shonn Greene – 24 rushes, 129 yards, TD
 Top receivers  KC – Dwayne Bowe – 6 receptions, 69 yardsNYJ – Shonn Greene – 3 receptions, 58 yards
    |  | 
   The Jets won easily in a crushing rout, with the final score overstating the closeness of the game as the Chief's only touchdown came in garbage time after the game was already decided.[3] The Chiefs offense gained only 4 total yards in the first two quarters. The Chiefs were also plagued with penalties, finishing the game with 11 penalties total. The Jets' final touchdown drive in the third quarter proved to be a particularly humiliating stretch.[4] Starting from their own 10 yard line, the Jets gained 81 penalty yards on 5 penalties committed by the Chiefs, including a rare penalty directly assessed against head coach Todd Haley for unsportsmanlike conduct. The Jets offense gained only 9 net yards on the drive, however they were still able to score a touchdown.[4] After the game, Haley was fired mid-season; writers speculated that Haley's penalty, as well as the team's overall poor performance and discipline that game, was to blame.[5] 
 Week 15: vs. Green Bay Packers
   Week 15: Green Bay Packers at Kansas City Chiefs – Game summary
  at Arrowhead Stadium, Kansas City, Missouri 
        | Game information | 
  |      | First quarter  KC – Ryan Succop 19-yard field goal, 8:56. Chiefs 3–0. Drive: 14 plays, 79 yards, 6:04.KC – Ryan Succop 32-yard field goal, 0:11. Chiefs 6–0. Drive: 9 plays, 42 yards, 3:58.
 Second quarter  Third quarter  GB – Donald Driver 2-yard pass from Aaron Rodgers (Mason Crosby kick), 8:04. Packers 7–6. Drive: 6 plays, 54 yards, 2:21.KC – Ryan Succop 46-yard field goal, 3:45. Chiefs 9–7. Drive: 7 plays, 61 yards, 4:19.
 Fourth quarter  KC – Ryan Succop 20-yard field goal, 11:28. Chiefs 12–7. Drive: 7 plays, 59 yards, 3:21.KC – Jackie Battle 1-yard run (Ryan Succop kick), 4:53. Chiefs 19–7. Drive: 8 plays, 66 yards, 3:57.GB – Aaron Rodgers 8-yard run (Mason Crosby kick), 2:04. Chiefs 19–14. Drive: 9 plays, 80 yards, 2:49.
 | Top passers  GB – Aaron Rodgers – 17/35, 235 yards, TDKC – Kyle Orton – 23/31, 299 yards
 Top rushers  Top receivers     |  | 
   In one of the biggest upsets of the year, the Chiefs beat the heavily favored Green Bay Packers, ending their hopes of a perfect season. The Chiefs defense held Packers quarterback Aaron Rodgers to 235 yards, a 49% completion percentage, and his only game of the season without multiple passing touchdowns in what was Rodgers' worst game statistically of the season. 
The game was the first game coached by defensive coordinator Romeo Crennel, who served as interim head coach after Haley's departure.[5] 
 Week 16: vs. Oakland Raiders
   Week 16: Oakland Raiders at Kansas City Chiefs – Game summary
  at Arrowhead Stadium, Kansas City, Missouri 
 - Date: 
- Game time: 12:00 p.m. CST
- Game weather: Sunny, 38 °F (3 °C)
- Game attendance: 70,803
- Referee: Mike Carey
- TV announcers (CBS): Kevin Harlan and Solomon Wilcots
- Recap, Game Book
     | Game information | 
  |      | First quarter  OAK – Sebastian Janikowski 28-yard field goal, 13:20. Raiders 3–0. Drive: 4 plays, 4 yards, 1:40.KC – Ryan Succop 23-yard field goal, 3:06. Tied 3–3. Drive: 9 plays, 31 yards, 4:58.
 Second quarter  Third quarter  OAK – Denarius Moore 61-yard pass from Carson Palmer (Sebastian Janikowski kick), 8:52. Raiders 10–3. Drive: 7 plays, 79 yards, 3:55.KC – Ryan Succop 20-yard field goal, 3:30. Raiders 10–6. Drive: 9 plays, 78 yards, 5:22.
 Fourth quarter  OAK – Sebastian Janikowski 31-yard field goal, 2:57. Raiders 13–6. Drive: 8 plays, 30 yards, 4:48.KC – Dwayne Bowe 3-yard pass from Kyle Orton (Ryan Succop kick), 1:02. Tied 13–13. Drive: 5 plays, 80 yards, 1:55.
 Overtime  OAK – Sebastian Janikowski 36-yard field goal, 12:47. Raiders 16–13. Drive: 4 plays, 58 yards, 2:13.
 | Top passers  OAK – Carson Palmer – 16/26, 237 yards, TD, 2 INTKC – Kyle Orton – 21/36, 300 yards, TD, 2 INT
 Top rushers  Top receivers  OAK – Denarius Moore – 4 receptions, 94 yards, TDKC – Dexter McCluster – 5 receptions, 89 yards
    |  | 
   Week 17: at Denver Broncos
      | Game information | 
  |      | First quarter  Second quarter  Third quarter  DEN – Matt Prater 38-yard field goal, 8:11. Chiefs 7–3. Drive: 4 plays, 0 yards, 1:30.
 Fourth quarter  | Top passers  Top rushers  KC – Dexter McCluster – 12 rushes, 61 yards, TDDEN – Willis McGahee – 28 rushes, 145 yards
 Top receivers     |  | 
   Standings
 Division
  Conference
   |  | 
  | # | Team | Division | W | L | T | PCT | DIV | CONF | SOS | SOV | STK | 
  | Division winners | 
  | 1 | New England Patriots | East | 13 | 3 | 0 | .813 | 5–1 | 10–2 | .449 | .423 | W8 | 
  | 2[a] | Baltimore Ravens | North | 12 | 4 | 0 | .750 | 6–0 | 9–3 | .477 | .484 | W2 | 
  | 3 | Houston Texans | South | 10 | 6 | 0 | .625 | 4–2 | 8–4 | .453 | .413 | L3 | 
  | 4[b] | Denver Broncos | West | 8 | 8 | 0 | .500 | 3–3 | 6–6 | .520 | .445 | L3 | 
  | Wild cards | 
  | 5[a] | Pittsburgh Steelers | North | 12 | 4 | 0 | .750 | 4–2 | 9–3 | .492 | .411 | W2 | 
  | 6[c] | Cincinnati Bengals | North | 9 | 7 | 0 | .563 | 2–4 | 6–6 | .492 | .326 | L1 | 
  | Did not qualify for the postseason | 
  | 7[c] | Tennessee Titans | South | 9 | 7 | 0 | .563 | 3–3 | 7–5 | .461 | .396 | W2 | 
  | 8[d] | New York Jets | East | 8 | 8 | 0 | .500 | 3–3 | 6–6 | .500 | .395 | L3 | 
  | 9[b][d][e] | San Diego Chargers | West | 8 | 8 | 0 | .500 | 3–3 | 7–5 | .516 | .430 | W1 | 
  | 10[b][e] | Oakland Raiders | West | 8 | 8 | 0 | .500 | 3–3 | 6–6 | .504 | .438 | L1 | 
  | 11 |  | West | 7 | 9 | 0 | .438 | 3–3 | 4–8 | .512 | .464 | W1 | 
  | 12[f] | Miami Dolphins | East | 6 | 10 | 0 | .375 | 3–3 | 5–7 | .504 | .417 | W1 | 
  | 13[f] | Buffalo Bills | East | 6 | 10 | 0 | .375 | 1–5 | 4–8 | .520 | .510 | L1 | 
  | 14 | Jacksonville Jaguars | South | 5 | 11 | 0 | .313 | 3–3 | 4–8 | .500 | .363 | W1 | 
  | 15 | Cleveland Browns | North | 4 | 12 | 0 | .250 | 0–6 | 3–9 | .531 | .313 | L6 | 
  | 16 | Indianapolis Colts | South | 2 | 14 | 0 | .125 | 2–4 | 2–10 | .539 | .594 | L1 | 
  | Tiebreakers[g] | 
  |   ^ a b Baltimore clinched the AFC North title based on a head-to-head sweep over Pittsburgh. ^ a b c Denver clinched the AFC West title instead of San Diego or Oakland based on record versus common opponents (5–5 to San Diego's and Oakland's 4–6). ^ a b Cincinnati clinched the AFC 6 seed instead of Tennessee based on a head-to-head victory. ^ a b New York Jets finished ahead of San Diego based on head-to-head victory. ^ a b San Diego finished ahead of Oakland in the AFC West based on better conference record (7–5 to 6–6). ^ a b Miami finished in third place in the AFC East based on a head-to-head sweep over Buffalo. ^ When breaking ties for three or more teams under the NFL's rules, they are first broken within divisions, then comparing only the highest ranked remaining team from each division.  | 
 Notes and references
   - ^ "Haley Relieved of Duties". Archived from the original on January 7, 2012. Retrieved December 12, 2011. 
- ^ a b "Kansas City Chiefs 2010 Free Agency". NFL.com. Archived from the original on April 24, 2010. Retrieved April 25, 2010. 
- ^ "Jets Run Over Chiefs, 37-10". December 11, 2011. 
- ^ a b Rubenstein, Alex; Bois, Jon (March 13, 2021). The god-awful drive that changed NFL history | Dorktown. Secret Base/SB Nation – via YouTube. 
- ^ a b "Chiefs fire coach Todd Haley". ESPN.com. December 12, 2011. 
- ^ "2011 Conference Standings". NFL.com. Retrieved December 8, 2013. 
  |  | 
|---|
|  | 
| Franchise |  | 
|---|
| Stadiums |  | 
|---|
| Key personnel |  | 
|---|
| Culture |  | 
|---|
| Lore |  | 
|---|
| Rivalries |  | 
|---|
| Wild card berths (10) |  | 
|---|
| Division championships (17) |  | 
|---|
| Conference championships (5) |  | 
|---|
| League championships (5) |  | 
|---|
| Retired numbers |  | 
|---|
| Media |  | 
|---|
| Current league affiliations |  | 
|---|
| Former league affiliation |  | 
|---|