Novak Djokovic is onto the third round, defeating Andreas Haider-Maurer in straight sets.
Round 2 of the 2015 US Open wraps up on Thursday. Here's how to watch Roger Federer and Andy Murray, in addition to all the matches at the top three courts.
Rafael Nadal is onto Round 3, defeating Diego Schwartzman in straight sets.
CoCo Vandeweghe wasn't happy with her performance on Wednesday.
No. 1 Williams beat Bertens in straight sets, 7-6, 6-3.
Victoria Azarenka won on Tuesday, but she wasn't in the best mood.
The second round of the 2015 US Open will begin on Wednesday in New York with both top seeds in action on the men's and women's side.
View the full results of Tuesday's US Open action, including Donald Young's remarkable comeback.
No. 3 seeded Andy Murray took down the talented young Australian Nick Kyrgios in four sets to advance to Round 2 at the US Open.
Roger Federer is onto the next round, as he topped Leonardo Mayer in straight sets on Tuesday.