The Green Bay Packers suffered a shock 19-14 loss to the Kansas City Chiefs on Sunday, shattering their hopes of a perfect season as three more teams joined them in the National Football League (NFL) playoffs.The New England Patriots wrapped up the AFC East division with a 41-23 win over the Denver Broncos while the Pittsburgh Steelers and Baltimore Ravens both advanced, before their games had even kicked off, when other results went their way.With just two weeks of the regular season left, seven of the 12 post-season berths have already been snapped up, setting up a mad scramble for the last five spots.After winning 19 consecutive games, including last season’s Super Bowl, the Packers were on the verge of a host of records when they slipped up against a struggling opponent that fired their coach and benched their quarterback in the past week.But the Chiefs (6-8) overcame their own off-field problems to produce their best performance of the season in the first game under interim coach Romeo Crennel.With new starting quarterback Kyle Orton throwing for 299 yards, Ryan Succop kicked four field goals and Jackie Battle scored the game-winning touchdown.The Packers, who fell to 13-1 this season, badly missed injured receiver Greg Jennings and quarterback Aaron Rodgers was below his best, completing 17 of 35 passes for 235 yards while being sacked four times.The result denied the Packers a chance of joining the 1972 Miami Dolphins as the only teams to go through an entire season undefeated as well as spoiling their bid to break New England’s 21-game win streak, set in 2003-04.After winning their first 13 games this season, the Packers were already guaranteed a first round bye and a home game in the second week of the playoffs.If they win one of their remaining two games, or the San Francisco 49ers lose any of their last three, Green Bay will lock up the top seed in the NFC.While the Packers were rueing the end of their streak, the Indianapolis Colts were celebrating the end of an embarrassing run of 13 straight losses as they finally registered their first win of the season, beating the Tennessee Titans 27-13.The Colts have been without star quarterback Peyton Manning all season and Colts vice chairman Bill Polian later confirmed he would not play in theremaining two games.The Colts’ win over the Titans ensured the Steelers, last year’s AFC Champions, were safely through to the playoffs before their clash with the 49ers on Monday.