Atherton resident Catherine Bellis has been forced to withdraw from the Australian Open because of a lingering hip injury.
Bellis, the youngest player (17) in the top 100, has not played since winning the inaugural Hawaii Open in November.
In July, Bellis announced her commitment to play at Stanford during the Bank of the West Classic in July.
That was before she reached the third round of the US Open in September, a performance that convinced her to turn pro. She would have made a cool $137,503 for the effort.
The Hawaii title was her first on the WTA tour, though she had won two ITF titles in October: Saugenay and Toronto.
Bellis, currently ranked 74th, owns seven ITF singles titles and two ITF doubles titles.
She has won 22 of her past 24 matches, dating to the US Open, where she won three matches just to qualify for the main draw.
She has not yet played in any other Grand Slam event.
Bellis tweeted, "Bummed I have to pull out of @AustralianOpen b/c of a hamstring strain. Healing, but not ready to play yet. Can't wait to start 2017 szn!"