Tennis superstar Serena Williams lost in the third round of the U.S. Open on Friday in a thrilling match against Ajla Tomljanovic of Australia. Williams recently said she would retire after the U.S. Open. Since becoming a pro at the age of 14, Serena Williams won 23 Grand Slam championships and spent 319 weeks ranked as the top female tennis player in the world. She and her sister Venus redefined the sport of tennis and inspired new generations of African Americans to play the game.

In other news from the U.S. Open, Frances Tiafoe has upset 22-time Grand Slam champ Rafael Nadal to reach the quarterfinals. Tiafoe is the son of refugees from Sierra Leone. His father was a day laborer who helped build the Junior Tennis Champions Center in Maryland. The family lived for years in a vacant storage room at the tennis center.