Pettis (knee) was a limited participant during Wednesday's practice, Nick Wagoner of ESPN.com reports.
Pettis suffered the knee injury in Sunday's loss to the Eagles, but the good news was he didn't aggravate the issue. The depth of the receiving room could be tested heading into Week 5's game against the Dolphins, as Trent Taylor (ankle) was also limited in Wednesday's practice. Expect Thursday's practice to shed some light on both guys' injury status.