Nose tackle Ian Williams has a small fracture in one of the bones of his left lower leg and will not need surgery, according to a league source. He is expected to be out several weeks while the bone heals.
It's not known whether the 49ers will place Williams on injured reserve, which would end his season. Williams, who missed nearly all of the 2013 with a broken ankle on the same leg, has played well at nose tackle this season. Pro Football Focus gives him a 12.9 rating for the first nine games. Among 49ers defenders, only Justin Smith has a higher rating.
The team could replace him by taking Glenn Dorsey off injured reserve. Dorsey went on the list – with a designation to return – earlier this year after he suffered a torn bicep on Aug. 1. He's been practicing with the team for the last two weeks. Quinton Dial and Tony Jerod-Eddie could fill in if Dorsey is not quite ready to be back.
Meanwhile, receiver Bruce Ellington suffered a sprained ankle in this second quarter Sunday and did not return. The injury is not considered long-term, the NFL Network reported, but Ellington could be out for Sunday's game against the Giants.
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Perrish Cox filled in on punts while Carlos Hyde handled kickoffs. Ellington has not made any major mistakes as a return man, but he hasn't provided much pop either. The 49ers rank 28th in average punt return, 8th in kick returns.
Read Matt Barrows’ blogs and archives at www.sacbee.com/sf49ers.