On Tuesday, Mike Mayock broke down four players with something to prove this week in Mobile, Alabama:
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1. Denard Robinson, Michigan QB/WR
Robinson is making a position change to wide receiver. He's not 100 percent healthy but looked pretty good on a few deep routes Tuesday. It will be a bumpy transition, but Robinson has the athleticism to pull it off. He'll have to add value as a return man.
2. Ezekiel Ansah, BYU defensive end
Mayock calls Ansah a first-round talent who just hasn't shown it. Ansah didn't really play until this year, and needs to prove he can measure up to top competition.
3. Margus Hunt, SMU defensive end
The Estonia native is nicknamed the "Eastern Block" for his 17 blocked kicks in college. Hunt is a physical specimen that had some hype coming into the season but didn't really produce. Mayock says Hunt needs to show he can bend, hold the point of attack and get up the field.
4. Kyle Long, Oregon tackle
Howie's son and Chris' brother has only played one year at offensive tackle after playing on the defensive line at Saddleback Junior College. Long was a former pitching prospect that got a DUI, so he'll have to answer questions about that. Long missed Tuesday's practice with the flu.Follow Gregg Rosenthal on Twitter @greggrosenthal.