Timmons leaves Steelers' practice after aggravating ankle injury

PITTSBURGH -- Steelers outside linebacker Lawrence Timmons practiced Wednesday as he recovers from a high ankle sprain, but he didn't finish the workout.

The Steelers were hopeful that Timmons could play Sunday in Chicago, but the injury flare-up is a setback. Timmons originally was hurt during an Aug. 22 preseason game against the Washington Redskins.

Timmons and wide receiver Limas Sweed were listed on the Steelers' injury report as having limited participation in practice. Sweed developed a foot problem during practice, and his status for Sunday's game against the Bears is uncertain.

Tyrone Carter, the veteran safety who will replace injured Pro Bowler Troy Polamalu, didn't practice for personal reasons.

Copyright 2009 by The Associated Press