New York: Defending champion Serena Williams has lost only four games on her way to the third round of the US Open and being forced to play matches on back-to-back days is no extra worry to the world number one.
Williams defeated Russian-born Kazakh Galina Voskoboeva 6-3, 6-0 on Thursday in a match postponed from Wednesday by rain. Next in the American star's path is a Friday night match with another Russia-born Kazakh, Yaroslava Shvedova.
"I'm definitely used to it," Williams said. "I usually play every day. In regular tournaments I don't have a day off. Only in the Grand Slams I get the luxury of having a day off. I guess I didn't get that."