Rashard Mendenhall needs to get his act together this season.  Many had projected that he was going to kick Willie Parker to the bench but he hasn’t shown he’s ready for that kind of roll thus far in the pre-season.  In three pre-season games so far, Mendenhall has carried the ball 30 times for 98 yards (3.3 ypc) with 1 TD run.  He has also caught 2 passes for 16 yards (8.0 avg).  Mendenhall had his rookie season cut short after 4 games last season.  Hopefully he learned his lesson as he texted fellow Ravens’ rookie RB Ray Rice about how he was going to run all over them.  Rice then showed the defense what he said and in the game that week the Ravens’ defense broke his shoulder.  With his stats at the time he shouldn’t have been talking trash to anyone.  He played in 4 games (1 start) last season and he carried the ball 19 times for 58 yards (3.1 ypc).  He also caught 2 passes for 17 yards (8.5 avg) last season.  The Steelers need Mendenhall to step up as he’s not in the Big 10 anymore where he could simply run over defenders.