Ray Rice provided most of the offense for the Ravens (4-1), gaining 102 yards on 17 carries while also make a 16-yard pass reception.
Joe Flacco managed 187 aerial yards with an interception on 13-for-27 efficiency, hitting with Anquan Boldin with four passes for 82 yards as the Ravens won their third straight game.
Chiefs signal-caller Matt Cassel was knocked out of the game with a fourth-quarter head injury after tossing a pair of interceptions and losing a fumble.
Jamaal Charles carried the ball 30 times for 140 yards for the Chiefs (1-4).
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