Following are collated results of boxing quarterfinals of three categories at the Beijing Olympic Games on Tuesday:

Light flyweight (48kg)

Paddy Barnes, Ireland, bt Lukasz Maszczyk, Poland, 11-5

Zou Shiming, China, bt Birzhan Zhakypov, Kazakhstan, 9-4

Serdamba Purevdorj, Mongolia, bt Amnat Ruenroeng, Thailand, 5-2

Yampier Hernandez, Cuba, bt Paulo Carvalho, Brazil, 21-6

Lightweight (60kg)

Hrachik Javakhyan, Armenia, bt Baik Jongsub, South Korea, walkover

Alexey Tishchenko, Russia, bt Darleys Perez, Colombia, 13-5

Yordenis Ugas, Cuba, bt Georgian Popescu, Romania, 11-7

Daouda Sow, France, bt Hu Qing, China, 9-6

Light heavyweight (81kg)

Tony Jeffries, Britain, bt Imre Szello, Hungary, 10-2

Kenny Egan, Ireland, bt Washington Silva, Brazil, 8-0

Zhang Xiaoping, China, bt Abdelhafid Benchabla, Algeria, 12-7

Yerkebulan Shynaliyev, Kazakhstan, bt Dzhakhon Kurbanov, Tajikistan, 12-6