Serena Williams loses in 4th round of French Open

Tennis legend Serena Williams got knocked out of the French Open on Sunday, losing in the fourth round to 21-year-old Elena Rybakina of Khazakstan, 6-3, 7-5. Williams, who turns 40 in September, has won the French Open three times, but hasn't made it past the fourth round since 2016. Williams, who has won 23 Grand Slam singles titles, said she was looking forward to the next Grand Slam tournament, Wimbledon, which starts June 28. The French Open is played on clay courts, and Wimbledon is on grass. "I'm kind of excited to switch surfaces," Williams said. "Historically I have done pretty well on grass." In the men's tournament, 20-time Grand Slam champion Roger Federer withdrew on Sunday, saying he didn't want to push himself "too quickly" after two knee surgeries.