NEW YORK (AP) — Ajla Tomljanovic, sidelined nearly all this season by a knee injury after
beating Serena Williams last year in the 23-time Grand Slam singles champion's final match, withdrew from the
U.S. Open on Wednesday.
That sent No. 4 seed Elena Rybakina into the third round and forced the U.S. Tennis Association to juggle the schedule, with their match having been slated for the night session.
Tomljanovic hadn't played a match this season until her first-round victory over Panna Udvardy. The Australian had knee surgery and had been out of action since the Billie Jean King Cup last November.
She said after her victory Monday night that she was realistic that her knee still needed more time.
"I don't even want to think about the rest of the season," Tomljanovic said. "But it doesn't matter. I'm always going to do what's best for my long-term recovery. I definitely still need to go back to the drawing board and get stronger and fitter if I want to compete, not in just one match, but looking at second weeks and stuff like that."