I read on one of the VN threads that JJPs labrum injury in the spring had set him back and that he missed a lot of summer conditioning which then slowed fall progress. That theory is more hopeful than some of the other explanations I have heard...so I’m going with that one!
Could J.J. Peterson help Tennessee football's depth issues at linebacker?
If the link doesn’t work, it was an article by Mike Wilson In KNS, who reported on Sherrer at QB Club. It seems to be available for free.