Serena Williams loses to Ajla Tomljanovic in U.S. Open farewell
I've been down before. ... I don't really give up," Williams said. "In my career, I've never given up. In matches, I don't give up. Definitely wasn't giving up tonight
She turns 41 this month and recently told the world that she is ready to start "evolving" away from her playing days
I'm so grateful to every single person that's ever said, 'Go, Serena!' in their life.
Williams joked, "I always did love Australia," the country that hosts the next Grand Slam tournament in January.
When Williams was a teen. Now she's married and a mother; her daughter, Olympia, turned 5 on Thursday.
Tomljanovic is unabashedly a fan of Williams, having growing up watching her play on TV.
Williams (officially ranked 605th in the world heading into the US Open) led Tomljanovic (ranked 46th) 5-3 in the first set
Serena gives one more memorable moment in US Open loss
After losing the final four games of the first set, Williams had Tomljanovic down 4-0 and 5-1 in the second, but Tomljanovic battled back to force a tiebreak.