"I told him to be patient, that these things have a way of working themselves out." -- Tom Osborne to Steve Taylor when Taylor voiced concerns about the direction of the football program under Bill Callahan and Steve Pederson.
...well, he could try to prove that he can shut down elite college hitters...or that he has the character necessary to play on a team where he isn't always the featured athlete...or that he can stick to a commitment...or that maybe -- just maybe -- Juco isn't tantamount to MLB.
Just a few things "left to prove" in my estimation.
"If you aren't fired with enthusiasm, you will be fired with enthusiasm." Vince Lombardi