It's not easy to replace a runner called The Bus.
Steelers coach Bill Cowher said it might take a couple of running backs to fill Jerome Bettis' former role.
Bettis pounded the ball inside in short-yardage and goal-line situations and scored nine touchdowns in 110 carries during the Steelers' Super Bowl run last season.
"I can't say right now there's been one person, like we had with Jerome," Cowher said Wednesday at Steelers training camp at St. Vincent College. "I don't think that's a bad thing. That's the way it was last year. This year is a different year, and we'll go from there."
Running back Willie Parker will get first crack at goal-line duty when the Steelers (0-2) play the Philadelphia Eagles (1-2) in a preseason game Friday night at Lincoln Financial Field.
Cowher said Parker will play the first quarter with the starters -- and this time he won't run off the field in most short-yardage situations.
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