According to WGR 550 Buffalo's Joe Buscaglia, Steelers rookie RG David DeCastro exited Ralph Wilson Stadium Saturday night on crutches and with a "big brace" on his injured right knee.
"Doesn't look good," observed Buscaglia, a Bills beat reporter covering Saturday's preseason game against the Steelers. We don't want to jump to any irresponsible conclusions, but the initial indications suggest DeCastro's injury could be season-threatening. The Steelers should have an update by Sunday. Per Gerry Dulac of the Pittsburgh Post-Gazette's Gerry Dulac, the organization initially fears DeCastro has torn his right ACL.
Source: Joe Buscaglia on Twitter