21.   Light flyweight Ron Siler gave the struggling United States its first victory Monday on the second day of the World Amateur Boxing Championships.

22.   MEXICO CITY -- Humberto Gonzalez of Mexico overcomes a strong challenge from Michael Carbajal and retained his WBC and IBF light flyweight title on a split decision.

23.   Michael Carbajal will also defend his IBF light flyweight title and Johnny Tapia will defend his WBO junior batamweight title against opponents to be named later.

24.   Samarn Sor Jaturong of Thailand knocked out Chilean challenger Ally Galvez in the second round Saturday to retain his World Boxing Council light flyweight title.

25.   They seemed to have one good hope for a gold, however, in light flyweight boxer Va Dararith.

26.   Yuri Arabachakov is the WBC light flyweight champion and Orzubek Nazaov is the WBA lightweight champion.

27.   In a third championship bout on the same card, American Michael Carbajal defends his IBF light flyweight title against Colombian Mauricio Pastrana.

28.   -- Cuba suffered their first defeat in the Olympic boxing when Mansueto Velasco of the Philippines got a convincing points victory over Yosvani Aguilera in the light flyweight division.

29.   A Filipino qualified for the light flyweight final, but their bantamweight bet lost on points after he injured his right elbow in the first round.

30.   Defending light flyweight champion Oleg Kucherenko of Germany made a second round exit.