Harrison, Polamalu will play Thursday

Pittsburgh Steelers Pro Bowl outside linebacker James Harrison and safety Troy Polamalu will make their 2011 preseason debuts Thursday against the Philadelphia Eagles, Steelers head coach Mike Tomlin confirmed. Harrison is returning from offseason back surgery. Polamalu rested after last season's Achilles injury.

Steelers starting guard Chris Kemoeatu (knee) and cornerback Bryant McFadden (groin) will not play this week. Both also missed last week's preseason opener against the Washington Redskins.

Pittsburgh's No. 1 cornerback, Ike Taylor, had successful thumb surgery and is expected to miss the rest of the preseason.