ATLANTA (AP) _ Americans Lily Yip and Amy Feng both scored straight-set victories in Olympic table tennis on the opening day of the women's singles competition.

Yip, from Metuchen, N.J., defeated Krisztina Toth of Hungary 21-17, 21-18 Wednesday. Feng, from Wheaton, Md., topped Valentina Popova of Slovakia 22-20, 21-12.

Yip and Feng, who teamed for a doubles victory Tuesday, were both born in China, where Yip was ranked in the top 20 in the early 1980s.

Round-robin play continues until Saturday. The winner of each of the 16, four-player groups qualify for a single elimination tournament, with the women's gold medal match scheduled for July 31.

Feng is in a group with one of the favorites, Liu Wei of China. Liu is ranked fourth in the world, compared to Feng's 44th.

Yip, No. 95 in the world, has 24th-ranked Chan Tan Lui of Hong Kong in her group.

Deng Yaping of China, who won gold medals in both singles and doubles