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Too often did Craig Roh disappear from games in 2011. He is just too talented not to have a significant impact.
Roh is the only returning starter on the defensive line, so he'll need to be the leader of this group.
His performance is crucial to this defense. If he can have a big year, it would help the defensive line tremendously.
If he doesn't play as well as he can, the line will likely struggle.
There is really no reason he can't be a force off the edge, just as he has been at times in the past.
Now a senior (and possible captain candidate), hopefully it will be his time to shine.