Sugar Ray Leonard on 'DWTS': 'I Wanted to Cry'

Boxing legend Sugar Ray Leonard knows how to move in the ring but preparing for "Dancing with the Stars" has been a daunting task for the athlete.

"I had two left feet and I was like, 'Oh my God, this is crazy!'" Leonard admitted to "Extra's" Terri Seymour when he began rehearsals with partner Anna Trebunskaya. "The second day I said 'What have I got myself into?' I mean, I wanted to cry."

He continued, "As a boxer you have to be smooth and loose and everything. But I think with dancing, it's more graceful."

Trebunskaya said she worried about his energy level. "I don't want him to lose any weight. I want him to be strong and healthy, and I'm actually reminding him to eat."

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Still, Leonard is definitely getting into fighting shape. "Not saying I'm the best, but I'm more..." Anna chimed in, "More of a dancer now."

Leonard and Trebunskaya take on the fox trot when "Dancing with the Stars" premieres Monday, March 21 on ABC.