up until now:10/23/2008
Floyd mayweather - retired this year
rockey marciano a heavy weight champion in the 50's.
sven ottke - a German super middle weight retired a few years ego.
Lopez a fly weight Mexican champ.
Joe Calzaghe a welsh fighter who recently beat people like roy Jones jr and bernard Hopkins, a pound for pound boxer, mostly light heavyweight.
Joe Calzaghe; Floyd Mayweather Jr. Buy a current issue of RING magazine. Go to the Ratings page(s). There beside names you can browse won-loss-drawn records of all the very top active list (& rated) boxers; their will be many more names you do not see because the rating process has various competeing interests. You will see quite a few boxers with undefeated records in those ratings. Both Managers and boxers work very hard to preserve a unblemished record as-long-as possible.
Kimbo Slice is no longer part of the UFC roster. He used to fight in the UFC but left them in 2010. He is currently a professional boxer. He had only one fight in the UFC which he lost. The fight was at UFC 113 against Matt Mitrione which he lost by TKO. He did not fight for UFC again after that.
benny urquidez was never defeated in the ring going 200-0
Kick boxer A Kickboxer would knock a boxer out any day!
they will stop the fight
Depends on the fight, championship.
Their trainers and coach.
Martin was never a boxer.
General Lee lost a lot of troops and he said "I will never fight the North again."
no, never... never do that.
Either he was knocked out or lost on points.
yeah he was a boxer before becoming a rapper
youngest boxer to fight for world title