OAKLAND (AP) -- Light heavyweight champion Andre Ward is retiring from boxing with an undefeated record because he no longer has the desire to fight.
The 33-year-old Ward released a statement on his website Thursday titled "Mission Accomplished." He says his body now cannot withstand the "rigors of the sport," and he shouldn't keep fighting if he can't give it his all.
"From the bottom of my heart, thank you to everyone who has played a part in my journey. You know who you are. I could not have done this without you," he wrote. "I want to be clear — I am leaving because my body can no longer put up with the rigors of the sport and therefore my desire to fight is no longer there. If I cannot give my family, my team, and the fans everything that I have, then I should no longer be fighting."
Ward is currently rated the best "pound for pound" boxer by Ring Magazine. But in an interview with ESPN's First Take, he said he no longer wants to do the work to prepare for his bouts.
"People see what I do fight night, they see under the lights, but they don't see the toil, they don't see the grind, they don't see just the pain, the physical pain that you go through, not just in the fights, but to prepare and to get ready for those battles," he told ESPN.
"I felt the physicality of the sport, not just in the ring stuff, but the training and the preparation, start to take its toll on me for the last two or three years and I bit down and continued to push through and at this point, it's time and I know it's time."
Ward has won all 32 of his fights, with 16 knockouts. He won the Olympic gold medal as a light heavyweight in 2004. Ward won the WBA super middleweight title in 2009 when he defeated Mikkel Kessler and unified that title in 2011 when he beat Carl Froch in the Super Six super middleweight tournament final.
Ward then battled shoulder problems that kept him out of the ring and later went 19 months without a fight because of a protracted legal dispute with his former promoter, the late Dan Goosen.
Ward got back in the ring in June 2015. He won the light heavyweight title in a disputed, unanimous decision against Sergey Kovalev in November 2016, taking all three belts in the process. Ward then beat Kovalev more decidedly in a rematch in June that was stopped in the eighth round.
"Andre Ward ends his boxing career as he only knew how to live it — as a champion at the top," HBO executive vice president Peter Nelson said. "To watch Ward was to marvel at constant mastery of craft in the ring, to say nothing of his being the consummate role model outside it. The Hall of Fame will be lucky to have him."
HBO said Ward will work as an analyst for its boxing broadcasts.
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