Serena Williams lost to Ajla Tomljanovi in the US Open third round Friday.
The defeat likely ends the 23-time Grand Slam champion's career.
Williams said goodbye on the court where she won her maiden Grand Slam.NY — Serena Williams' tennis career ends.
After losing an early lead in the first set of her three-set match against Tomljanovi,
the 23-time Grand Slam winner won four straight games to open the second set.
Tomljanovi wouldn't give up her lead. In the fifth game, the Australian broke back and held her serve to close the advantage.