Here are a few matchups I would like to see...

Wlad - Sergei
Peter - Sultan
Brock/Timor - Briggs (would be a boxing matchup but I think Briggs would fade)
Rahman - Toney II

That's all for right now. I think another sleeper guy who could have a chance to do some good is Malcolm Tann. So far though he has been a big underacheiver. I haven't seen half those prospects and I'm not impressed with a lot of them, especially Chapman.