My vote would have to go to former Nittany-Lion Dewitt Driscoll. Injuries kept him out for the most part but come Big 10 time, this guy just could never put it together.
He was behind Scott Moore his freshman year, although he did once beat Moore at a tournament. As a sophomore he lost the 7th/8th place match to Andy Simmons in overtime and was not selected as a wildcard. As a junior he suffered an injury and did not wrestle in the 7th/8th place match against Tommy Owen, who he pinned eariler in the tournament. He was once again not selected as a wildcard and had to stay home. Finally his senior year he won the 7th/8th place match against Cassio Pero and then won a match or two at the NCAA's before being eliminated by Dereck Hoffman of Virginia Tech.
I always thought that Driscoll would be an All American. He has wins over some top caliber wrestlers, but he just could never put it together when the pressure was on to do well. He has I believe 3 victories by Fall over Ryan Lang of Purdue, he has a win over Daniel Frishkorn, pin over Manuel Rivera, as well as many others.