The NFL's highest-rated passer would not be stopped on Sunday in Kansas City.
Philip Rivers rallied San Diego from a 21-3 third-quarter deficit, throwing two touchdown passes in the final 73 seconds, and the Chargers stunned Kansas City 22-21 on Sunday.
The victory kept alive the slender playoff hopes of the Chargers (6-8), who came into the season as Super Bowl favorites after losing to New England in last year's AFC title game.
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The Chiefs, aided by a delay of game penalty against the Chargers, tried a 50-yard field goal on the final play, but Connor Barth's kick was wide left.
