Pacquiao vs Bradley II: Arash Usmanee replaces Rocky Martinez, will face Ray Beltran on undercard

Rocky Martinez is officially out of his scheduled April 12 pay-per-view undercard fight against Ray Beltran, and will be replaced by tough fringe contender Arash Usmanee in the 12-round lightweight bout.

Martinez (27-2-2, 16 KO) was set to move up to 135 pounds to face Beltran for the NABO title, following a loss last November to Mikey Garcia. Martinez has withdrawn from the bout due to illness, according to Top Rank's Carl Moretti, who got the information from PR Best promoter Peter Rivera.

"Rocky went to see the doctor twice. That's what Peter Rivera (Martinez's co-promoter) told us," Moretti said. "He said Rocky had no energy, low blood sugar and had not been feeling well for four or five days. Maybe he has the flu or something, but whatever it is, he doesn't feel good and pulled out of the fight. He had missed going to the gym for three or four days in a row and on Friday he pulled out. He is just not going to be ready to fight."

Usmanee (20-1-1, 10 KO) hasn't fought since August, when he went to a draw with Argenis Mendez. Prior to that, he lost a very controversial decision to Rances Barthelemy in the 2013 ESPN Friday Night Fights season premiere in January. He's no pushover, and the good news is it should still be a good action fight.

Beltran (28-6-1, 17 KO) is fighting for the first time since September, when he was robbed in Scotland, leaving with a draw against Ricky Burns.