J.P. O'Connor with SIX! 132-17 career (9 losses to six champs):
Jordan Leen, 3x (2007 Dual @ 149, 2007 EIWA @ 149, 2009 EIWA @ 157)
Dustin Schlatter (2007 NCAA @ 149)
Jordan Burroughs, 2x (2008 NCAA @ 149, 2008 Vegas @ 157)
Bubba Jenkins (2008 NCAA @ 149)
Darrian Caldwell (2008 NCAA @ 149)
Gregor Gillespie (2009 NCAA @ 157)
His other losses were to:
Josh Churella, 2x (2006 Vegas, 2007 NCAA)
Jake Patacsil (2006 Midlands)
Cesar Grajales (2008 EIWA)
Michael Chandler (2008-09 Dual)
Chase Pami (2009 NCAA R12)
I can't find the other two losses from his frosh season, which probably occurred in open tourneys. He only had one dual loss that season, and I've got the Vegas and Midlands results.