Michelle Obama was on hand for her Let's Move campaign's tennis clinic at the U.S. Open where she got the chance to serve a few balls with Serena Williams.
The First Lady visited the tennis tournament for the first time Friday and promoted her campaign against childhood obesity while praising the U.S. Tennis Association's initiative to build kid-sized courts.
According to The Associated Press, Michelle served with speeds over 55 mph and
Chelly O even got playful with the tennis great and posed menacingly with her racket before taking on Serena.
Check out Michelle Obama and Serena Williams battling it out below.