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Charlie Riedel, Associated Press
Kansas City Chiefs interim coach Romeo Crennel talks to a reporter after the Chiefs defeated the previously unbeaten Green Bay Packers 19-14 in an NFL football game Sunday, Dec. 18, 2011, in Kansas City, Mo.

KANSAS CITY, Mo. — In the span of a week, the Kansas City Chiefs fired their head coach, settled on a new starting quarterback and ruined the Green Bay Packers' pursuit of perfection.

And somehow kept their faint playoff hopes alive.

The Chiefs still need to beat the Oakland Raiders on Saturday, and if the Broncos lose to the Buffalo Bills in a game that'll be played at the same time, Kansas City will visit Denver in their regular-season finale with the AFC West title and a spot in the playoffs riding on the outcome.

Who would have thought that a week ago?

Under interim coach Romeo Crennel, and behind the steady play of Kyle Orton, Kansas City stunned the Packers 19-14 on Sunday. The victory ended Green Bay's 19-game winning streak.