*Serena Williams scoots her way up to No. 3 in the WTA rankings, which were announced on Monday ahead of the U.S. Open.
The recent Olympic gold medalist in ladies doubles swapped places with Svetlana Kuznetsova – with the Russian dropping to fourth. Serbia's Ana Ivanovic and Jelena Jankovic are ranked No. 1 and 2 respectively.
Serena's sister and Olympic doubles partner, Venus Williams, is ranked No. 8.
Meanwhile, both sisters are appearing in a new ad campaign for Oreo Double Stuf cookies as the newest members of the Double Stuf Racing League (DSRL).
The DSRL brings friends and families together to "lick race" - a friendly competition where racers see who can twist, lick and dunk a single Oreo Double Stuf cookie and drink a glass of milk the fastest.
The siblings join famous quarterback brothers Peyton Manning and Eli Manning, who launched the DSRL earlier this year.
"And because we love a friendly rivalry, it'll be fun to show the Mannings what real DSRL competition is like! They're going down," said Serena.
Added Venus: "Oreo cookies and milk were a tradition in our house growing up, and my sister and I fondly remember twisting, licking and dunking them together. It was only natural to continue that tradition as adults, which is why we jumped at the chance to be a part of the DSRL."