Steelers fans couldn't be happier unless they weren't on the injury report at all.

Officially expect the returns of James Harrison, Troy Polamalu and Stevenson Sylvester this weekend, as all three are listed as "probable" on the team's injury report for Sunday's Week 5 game against Philadelphia. Running back Rashard Mendenhall is not on the injury report, and will play Sunday.

The inclusion of these players will give the Steelers a much needed boost in playmaking ability and depth at the safety and both linebacker positions. It's likely Harrison and Polamalu will start, giving them a much more dynamic defensive unit.

Harrison, assuming he's at least close to his standard form, is an outstanding run defender, and is able to lock down the offensive left edge against the run, making it extremely difficult to move him from a position where he can make a play from either gap he's near. Polamalu has the speed off the snap to disrupt blocking schemes, buying his teammates an extra second to shed blocks and make tackles.

Sylvester hasn't played much in his career to this point, but had a positive off-season, and would give the Steelers a more athletic option in sub-packages over Larry Foote.

Right tackle Marcus Gilbert is also listed as probable, and for the first time this season, the Steelers won't have a player miss the game due to injury.

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