Green retains cruiserweight title

PERTH, Australia -- Australian Danny Green retained his IBO cruiserweight world title Wednesday with a third-round knockout of Puerto Rico's Manny Siaca.

Green started the opening round strongly at Challenge Stadium and knocked Siaca down with a powerful right hook in the second. With a minute left in the third round, Siaca, 34, was counted out by the referee after three right hooks from the Australian.

Green, who improved to 29 wins from 32 fights, with 26 knockouts, has defeated Anthony van Niekerk, Julio Cesar Dominguez, Roy Jones Jr., and Siaca since coming out of retirement early last year.

Siaca's record slipped to 22-7.

"I hit him early," the 37-year-old Green said. "He took about 20 or 30 uppercuts and he felt the power and was intimidated by it."

It was Siaca's seventh fight since defeating former Australian rugby league player Anthony Mundine in 2004 to take the WBA super middleweight title.