strange YORK (AFP) ??” Serena Williams says she has no grieve ats about going against doctors' advice to participate in the US lay open where she is dominating adverse partys and enjoying unprecedented crowd support.

strange YORK (AFP) ??” Serena Williams says she has no grieve ats about going against doctors' advice to participate in the US lay open where she is dominating adverse partys and enjoying unprecedented crowd support.

"I wasn't suppos to come" admitted Williams after rolling to a 6-4 6-2 fourth orbed victory over Patty Schnyder, of Switzerland, upon Saturday.

"Not undivided of them (doctors) said it was OK however it kind of went in undivided ear and out the other. I took my avow advice."

Two-time champion Williams fired 12 aces and had no other than one double fault to reach the quarter-finals where she will face American compatriot Jennifer Capriati, who dispatched Japan's Ai Sugiyama in succession Saturday.

French inferior seed Amelie Mauresmo and Russian sixth se Elena Dementieva also won their fourth globular matches.

On the men's side, hard-serving Andy Roddick unleashed his power game forward Gillermo Canas and unseeded