By Rick Reeno

Former three division world champion "Sugar" Shane Mosley believes WBC 154-pound champion Saul "Canelo" Alvarez (40-0-1, 29KOs) is getting better with every fight. Mosley's final fight, before announcing his retirement, came against Canelo in May at the MGM Grand in Las Vegas. Canelo won a lopsided twelve round decision.

On Saturday night at the MGM Grand, Canelo will defend his title against Josesito Lopez (30-4, 18KOs), who moves up in weight for the second time in two fights.

Josesito, mostly due to the size advantage, is a huge underdog. He moved up to welterweight in June and came from behind to break the jaw of Victor Ortiz for a ninth round stoppage win.

"I kind of think that he is way too small, but you never know. He did a great job with Victor Ortiz and did some things in there," Mosley said to BoxingScene.com.

Mosley is not simply giving Canelo the edge over the disparity in size. He says Canelo's skills as a boxer are underrated - and he expects those attributes to trouble Josesito.

"It wasn't that he was so physically strong, he turned out to be more of a well rounded fighter [when I fought him]. He had a good defense. Maybe because he was fighting me he tightened up on his defense a little more. He did some good things in there. He's a tough kid. So I think that's going to give Josesito Lopez a lot of problems in there because he does have that size advantage and his hand speed is picking up. He's getting better," Mosley said.

Tags: Josesito Lopez , Saul Alvarez , Shane Mosley , Canelo-Lopez , Canelo vs. Lopez