David DeCastro's Wednesday knee surgery was successful, and the Steelers' first-round pick will be out for eight weeks.

The rookie from Stanford tore his MCL and dislocated his knee in the Steelers' third preseason game, putting his season in jeopardy. But after his surgery, it appears the guard will be ready to play sometime this year for Pittsburgh. Ramon Foster will play at right guard in DeCastro's absence.

The Steelers are aided by the introduction of a new rule that allows teams to put players on injured reserve with a designation to return - essentially a disabled list. This will allow the Steelers to stash DeCastro while he recuperates without using up a roster spot, whereas before the rule placing a player on the injured reserve meant they were no longer eligible to play for the rest of the season.

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