Really, I'd probably say deadlifts and cleans. I want to say thickbar cleans would be better than regular and more valuable to a wrestler, but the catch is different and I'm not sure how much the weight used will be limited by the bar, and IMO, outside of grip training your grip shouldn't limit the weight you're using. So I'd go with deadlifts, cleans, and thickbar dealifts... in fact, I think I may incorporate some thickbar deads into my routine, I miss the bastards.