Angolan boxer doesn't weigh-in, withdraws

Angolan heavyweight boxer Tumba Silva did not attend his medical weigh-in Wednesday, effectively withdrawing from competition at the London Olympics.

As a result of his failure to weigh in, Silva lost in a walkover to Italian Clemente Russo.

Russo, the No. 2 seed, advances to face the winner of the bout between Cuban Jose Larduet Gomez and Iran's Ali Mazaheri.