David

Snow

Ross was needed after Mark Anderson’s knee injury. He has bounced around practice squads since entering the league in 2010. Buffalo has ruled out three offensive linemen for Sunday’s game in Arizona, so Snow’s depth is badly needed. Snow is an undrafted rookie free agent out of Texas.

He’ll miss at least two weeks, and probably the last four games if it’s determined Wood needs surgery. Buffalo’s best offensive lineman, Wood has graded out this season as a top-12 pass-blocking center, according to Pro Football Focus. David Snow will take over as the Bills’ center.

A second-year undrafted free agent, Snow appeared in five games for the Bills last season, making two starts. He’ll serve as depth for the Steelers’ banged up line.