Following are the results of preliminaries of Beijing Olympics beach volleyball tournaments on Aug. 13:

Men's section

Pool B:

Rogers/Dalhausser, United States, bt Conde/Baracetti, Argentina, 2-0 (21-12, 21-13)

Samoilovs/Plavins, Latvia, bt Heyer/Heuscher, Switzerland, 2-1 (21-17, 21-23, 15-13)

Pool C:

Gomes/Terceiro, Georgia, bt Fernandes/Morais, Angola, 2-0 (21-14, 21-13)

Ricardo/Emanuel, Brazil, bt Schacht/Slack, Austria, 2-0 (21-14,21-17)

Pool E:

Nummerdor/Schuil, Netherlands, bt Klemperer/Koreng, Germany, 2-0 (21-16, 21-16)

Laciga/Schnider, Switzerland, bt Kjemperud/Skarlund, Norway, 2-0 (21-17, 21-13)

Women's section

Pool A:

Tian Jia/Wang Jie, China, bt Maaseide/Glesnes, Norway, 2-1 (17-21, 21-14, 15-8)

van Breedam/Mouha, Belgium, bt Kuhn/Schwer, Switzerland, 2-0 (21-18, 21-17)

Pool C:

Barnett/Cook, Australia, bt Anna Paula/Larissa, Brazil, 2-0 (23-21, 23-21)

Santanna/Martins, Georgia, bt Uryadova/Shiryaeva, Russia, 2-1 (10-21, 22-20, 15-12)

Pool E:

Pohl/Rau, Germany, bt Kadijk/Mooren, Netherlands, 2-0 (21-19,21-18)

Branagh/Youngs, United States, bt Esteves/Crespo, Cuba, 2-1 (21-19,13-21, 15-12)

(Xinhua News Agency August 13, 2008)