I think for someone to have something to prove, they must be coming from something less than good. Accordingly, I would say that Samuels would be at the top of my list, with Springs/Jacobs coming behind him to see if they can stay healthy.
I certainly don't see Portis/Smoot/Arrington/Gardner as having much to prove. They all had decent seasons.
I don't see Taylor having much to prove.
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