By James Blears

In Mexico City, former three division world champion "Sugar" Shane Mosley pealed down a sock to reveal an eight-inch scar running along his Achilles tendon on his left ankle.

Four months prior to last May's fight with Manny Pacquiao, he ruptured it while playing basketball, and underwent an operation. In the recovery process, he wasn’t able to do any running, until a month before the opening bell.

No such problems this time. Economically clipped with words, Shane who insists he’s already in great shape, says he’ll be training in Big Bear, which is also where WBC junior middleweight champion Saul “Canelo” Alvarez is bound for. The place is big enough for the two of them.

Mosley, who’s 40-years-old, and Saul who’s a stripling at just 21, will collide for Canelo’s title at the MGM Grand in Las Vegas. The fight will be the co-feature to the WBA super welterweight title fight between Miguel Cotto and Floyd Mayweather Jr.

“I’m going to use all of my experience, and I’m still youthful myself. I’ve also got a lot of energy and stuff like that," Mosley said.

Canelo acknowledged that this is his greatest challenge to date and a potentially dangerous fight for him. He said it’s the fulfillment of a dream to fight a legend like Sugar Shane, and he wouldn’t predict a knockout.