College football · NFLTuesday, October 13, 2026
The Upset Report
NFL · 2015 · Week 5 · Sunday, October 11, 2015

Chicago Bears stun Kansas City Chiefs, 18–17

The Bears closed as 10-point underdogs and won outright. The betting market gave them a 21% chance.

Final18–17
Upset size10
Chance to win21%
Rank in 20154th of 50

It was the biggest of 4 NFL upsets in 2015 Week 5, and the 4th-biggest of the 2015 season. Chicago Bears pulled off 3 other upsets in 2015.

Other NFL upsets in 2015 Week 5

  1. Cleveland Browns 33, Baltimore Ravens 30
    6-point underdog30% to winOTRecap
    Upset size6
  2. Indianapolis Colts 27, Houston Texans 20
    4.5-point underdog34% to winRecap
    Upset size4.5
  3. Pittsburgh Steelers 24, San Diego Chargers 20
    4-point underdog34% to winRecap
    Upset size4

Chicago Bears’ other 2015 upsets

  1. Chicago Bears 17, Green Bay Packers 13
    Week 127.5-point underdog22% to winRecap
    Upset size7.5
  2. Chicago Bears 37, St. Louis Rams 13
    Week 107.5-point underdog23% to winRecap
    Upset size7.5
  3. Chicago Bears 22, San Diego Chargers 19
    Week 93.5-point underdog37% to winRecap
    Upset size3.5

More: Chicago Bears upsets · Kansas City Chiefs upsets · all Week 5 upsets · how upset size works