Unlike Big Sis, who had problems in her first round match, Little Sis Serena Williams has breezed through her opening round women's singles matches at the 2009 US Open.
The defending champ began her quest to repeat at Flushing Meadows by beating Alexa Glatch 6-4, 6-1 in her opening round match at Arthur Ashe Stadium. Last night she needed only 53 minutes to overwhelm Hungary's Melinda Czink 6-1, 6-1.
Big Sis did join her in the third round by beating fellow American Bethanie Mattek-Sands in straight sets 6-4, 6-2. They play their opening round doubles match today versus Julia Goerges and Arantxa Parra Santonja.
They are not only seeking their first US Open doubles title since 1999, they're trying to add this title to the Wimbledon and Australian Open doubles championships they've already claimed this year.
Serena is seeking her 12th Grand Slam tennis title and is trying to become the first US Open repeat winner since Big Sis did so in 2000-2001.
The way she's playing right now, barring a monumental upset or running into her sister Venus in the semifinals, she just might get it.