Chiefs cornerback Marcus Cooper will play Sunday against the 49ers after all.
Cooper, who was limited in practice Thursday and Friday because of a knee injury, will be in the starting lineup Sunday at Levi's Stadium. Had Cooper missed the game, the Chiefs might have been forced to move starting safety Ron Parker back to corner.
The following players are inactive for the Chiefs Sunday: safety Eric Berry, quarterback Aaron Murray, receiver Donnie Avery, center Eric Kush, left guard Laurent Duvernay-Tardif, defensive end Damion Square and receiver Albert Wilson.
Ryan Harris will start his fifth straight game at right tackle for Donald Stephenson, who returned from a four-game suspension for violating the league's performance-enhancing drug policy this week but will be a reserve.
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Meanwhile, the 49ers will be missing a handful of key players on Sunday, including star tight end Vernon Davis and right tackle Anthony Davis.
This Week In Chiefs Football
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A replay of my Chiefs chat.
With Donnie Avery slated for surgery, A.J. Jenkins primed to start against old team.
Chiefs cornerback Sean Smith is in a groove, having fun on the field.