Vic Darchinyan of Australia is the new International Boxing Federation flyweight champion. The native of Armenia scored an 11th-round technical knockout of defending champion Irene Pacheco, handing the Colombian his first loss in 31 fights. The 28-year-old Darchinyan controlled the pace for most of Thursday night's bout in Hollywood, Florida. He finally knocked down the 33-year-old Pacheco in the 10th round with a right to the head. Darchinyan did not let up in the 11th round. He unloaded a series of unanswered shots near the ropes and then dropped Pacheco a second time with another right to the head 44 seconds into the round. Pacheco's cornermen had seen enough, asking the referee to stop the fight. Darchinyan is now unbeaten in 22 fights, with 17 knockouts. Some information for this report provided by AP and AFP.