( CNN ) -- The Kansas City Chiefs beat the Green Bay Packers on Sunday in Arrowhead Stadium , ending the defending Super Bowl champions ' quest for a perfect season . The Packers , who were 13-0 this season , were defeated 19-14 by the 5-8 Chiefs . Despite the loss -- the Packers ' first in 20 games -- Green Bay remains firmly atop the NFC standings . The Chiefs are in last place in the AFC West . Kansas City executives on Monday fired head coach Todd Haley after the team lost four of its previous five games . Sunday 's win was the first under interim head coach Romeo Crennel . Crennel was previously the team 's defensive coordinator . Also Sunday , the Indianapolis Colts ended their winless season with their first victory , beating the Tennessee Titans 27-13 . The Colts , previously 0-13 , have been struggling without star quarterback Peyton Manning as he recovers from neck surgery .
NEW : Indianapolis Colts win their first game of the season . The Colts are now 7-0 and have won four straight games for only the second time in franchise history. The Packers were 13-0 this season and had won 19 straight .