(Photo: Esther Lin/Showtime) By Dan Ambrose: Robert Guerrero (29-1-1, 18 KO’s) has got some major strikes going against him in his fight tomorrow night against welterweight knockout artist Selcuk Aydin (23-0, 17 KO’s) at the HP Pavilion, in San Jose, California.

The 29-year-old Guerrero hasn’t fought since last year in April, and when he did it was at lightweight. Guerrero is moving up in weight big time for this fight, and it strikes one as a desperate move by Guerrero. He’s been out of the ring for 15 months, and is moving up in weight two divisions. He’s also coming off of rotator cuff surgery on his left shoulder.

That’s definitely not good because Guerrero is a southpaw. The thing where Guerrero may have additional problems is the size issue. Although he’s taller than Aydin by an inch, Guerrero is used to towering over his opponents in the featherweight, super featherweight and lightweight divisions. Tomorrow night, that advantage is going to be minimal.

Guerrero’s best asset was his size in the lower weight classes, because he never was a big puncher, and big times problems when facing opponents that put pressure on him like Orlando Salido, Michael Katsidis and Daud Cino Yordan did with him. Aydin right up there with those guys with his ability to put pressure on his opponents, but he’s even more of a puncher than them because he’s got equal power in both hands and is naturally much bigger.

Guerrero still may win this fight if he can control the distance and keep Aydin away from the inside. But it’s not going to be easy because Guerrero has always been kind of slow and stiff-legged on his feet. Aydin will be able to get inside, and unless Guerrero spends the whole night clinching him, he’s going to take punishment. Guerrero has the hometown advantage, so if the fight is even slightly close, he’ll probably win it, but he’ll have to win it in a real sense for him to be taken seriously by boxing fans.

Winning a hometown decision will taint any victory Guerrero may win, and it might as well be a loss. If he wins and gets battered black and blue, then that also won’t help him because he’s got to really dominate Aydin for him to have any chance at getting a fight against the big names in the division.