Serena rolls

BEIJING -- Serena Williams (Lynwood, Calif.) advanced to the third round of women’s singles today when she defeated Samantha Stosur of Australia, 6-2, 6-0, in 44 minutes. Seeded fourth, Williams will meet No. 15 seed Alize Cornet of France in the Round of 16. Cornet defeated China’s Shuai Peng today, 6-2, 6-2.

No. 1 seeds Bob and Mike Bryan (Camarillo, Calif.) won their first round singles match over Mark Knowles and Devin Mullings of the Bahamas, 6-2, 6-1, today in 52 minutes. They will face either 2004 silver medalists Nicolas Kiefer and Rainer Schuttler of Germany or Austria’s Julian Knowle and Jurgen Melzer in the second round.

Jill Craybas (Providence, R.I.) lost her first round women’s singles match to No. 13 seed Patty Schnyder of Switzerland, 6-3, 6-2.