He was the favorite target of Matt Cassel, who connected on 22 of his 32 pass attempts for 233 yards and four touchdowns as the AFC West-leading Chiefs (7-4) snapped a four-game road skid.
Jamaal Charles gained 173 yards and scored a touchdown on 22 carries for Kansas City, which took its second straight win.
Matt Hasselbeck tossed for 282 yards and two touchdowns but yielded a pair of interceptions for the Seahawks (5-6), losers of four of their last five games.
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