hitting Ukrainian Andreas Kotelnik dethroned Gavin Rees as the World Boxing Association (WBA) light-welterweight world champion with a last round stoppage of the Welshman here Saturday. Rees produced one of the boxing upsets of 2007 when he took the title from Soulyemane M'Baye. But from the third round on, when his nose started to bleed, Rees - whose trainer is Enzo Calzaghe, the father and coach of undisputed super-middleweight champion Joe, started to be picked off by Kotelnik. And the challenger finished the bout 30 seconds from the end of the last round, and what would otherwise most likely have been a crushing points victory, when he dropped Rees with a powerful right hand. Defeat was the Welshman's first in 28 bouts as professional and it also meant Enzo Calzaghe had seen another of his fighters lose a world title this month after Enzo Maccarinelli, the former WBO cruiserweight champion, was knocked out by fellow Briton David Haye.Casamayor stops Katsidis In California, Cuba's Joel Casamayor stopped previously unbeaten Australian Michael Katsidis 30 seconds into the 10th round Saturday to win an interim world lightweight championship title. Casamayor knocked down the Aussie twice in the first round and flattened him again early in the 10th round. Seconds later, referee Jon Schorle halted the fight. __
