David DeCastro, the Pittsburgh Steelers' first round pick at offensive guard out of Stanford, is quickly recovering from a severe knee injury.

DeCastro tore the medial collateral ligament, dislocated his kneecap and damaged the patellar tendon when his right leg buckled under him during a preseason game Aug. 25 in Buffalo. He had surgery four days later.

“I don’t have any pain, so I’m just working hard to try to get back,” DeCastro said.

DeCastro expects to be back on the active roster this season.

“I saw him (Wednesday) on the bike, and that was encouraging,” offensive coordinator Todd Haley said. “The key thing with an injury is that you stay in the mix mentally.”