New York ? As usual, nothing fazed Serena Williams on the court.

With a man who’s tracked her around the globe for a year sitting in a jail cell less than 10 miles away, Williams waited out a long rain delay Sunday and then eased into the U.S. Open quarterfinals with a 6-1, 6-1 victory over Daja Bedanova.

The same German man accused of following Williams at those two tournaments, and others in Germany and Italy, was arrested early Saturday at the National Tennis Center after police spotted him watching through a fence while she played.

Albrecht Stromeyer, 34, will remain in custody at Rikers Island until a court appearance on Thursday unless he posts $3,000 bail. Stromeyer admitted in a written statement to police that he had been following Williams around the world.

“The bail is so low, I think that encourages him to keep doing what he’s doing,” Williams’ father, Richard, said. “It makes me wonder, ‘Could he hurt Serena?”‘

Williams snapped photographs from the stands while he watched his daughter play her fourth-round match against the 20th-seeded Bedanova. Rain delayed the start of play from 11 a.m. to a little after 5:30 p.m., and theirs was the only match that was completed by the time new showers suspended action at about 7 p.m.

All told, the encounter took 42 minutes, and Williams nearly had a winner for each. She hit 35 winners total including 16 forehands and eight backhands and had just five unforced errors.

She didn’t talk about Stromeyer after the match, with WTA Tour spokesman John Dolan preceding her news conference by saying: “Serena will not be addressing any questions related to the stalker incidents due to legal and security reasons.”