49ers activate nose tackle Dorsey following biceps injury, place Williams on injured reserve

San Francisco 49ers cornerback Chris Culliver (29) and Eric Reid (35) celebrate after New York Giants tight end Larry Donnell (84) drops the ball in the end zone during the second half of an NFL football game Sunday, Nov. 16, 2014, in East Rutherford, N.J. (AP Photo/Bill Kostroun) (The Associated Press)

Chris Culliver (29), cornerback de los 49ers de San Francisco, festeja después de que Larry Donnell, de los Giants de Nueva York, soltó el balón en las diagonales, durante el partido del domingo 16 de noviembre de 2014 (AP Foto/Bill Kostroun) (The Associated Press)

SANTA CLARA, Calif. – The San Francisco 49ers have activated nose tackle Glenn Dorsey following his 21-day evaluation window, putting him in position to play for the first time Sunday against Washington if he's deemed ready.

Dorsey tore his left biceps Aug. 1 and required surgery. He was placed on the injured reserve/designated to return list with the hopes he would be able to come back this season.

San Francisco cleared room on the 53-man roster by placing nose tackle Ian Williams on season-ending IR because of a fractured left fibula suffered at New Orleans on Nov. 9. He was sidelined last year following a Week 2 ankle injury against Seattle that required several procedures. Williams was in a walking boot and using crutches last week.

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