Raiders lineman Gallery out four to six weeks with broken leg

ALAMEDA, Calif. -- Oakland Raiders right guard Robert Gallery is expected to miss four to six weeks after undergoing surgery on a broken bone in his left leg.

Gallery was injured in the second half of Oakland's 13-10 victory in Kansas City on Sunday. Coach Tom Cable says the operation was performed Monday.

Cable says he has not decided who will replace Gallery. In Sunday's game, he moved center Chris Morris to guard and used Samson Satele at center. Cable says he will look at starting Khalif Barnes, Erik Pears or Paul McQuistan at guard as well.

Oakland hosts Denver on Sunday.