Steelers running back Willie Parker was reportedly dealing with a strained hamstring against the Titans in Week 1.
ESPN's Adam Schefter has reported that Parker strained his hamstring in pregame warmups last Thursday, limiting him to about 85% effectiveness.
Pittsburgh struggled to run the ball as a team against Tennessee.
Parker managed just 19 yards on 13 carries in the team's Week 1 victory.
Report: Parker Had Strained Hammy In Week 1