World number eight Madison Keys will miss next month's Australian Open after undergoing wrist surgery, the American said on Friday.
Keys, 21, who made the round of 16 at all four grand slam tournaments last year, had the procedure in early November and would not be ready for the season-opening grand slam that begins at Melbourne Park on 16 January.
"Three days after the year-end WTA Championships I had minor arthroscopic surgery on my left wrist," she said on Twitter.
Keys, who plays right-handed, also revealed she was being coached again by former world number one Lindsay Davenport, having worked with Thomas Hogstedt for the last year.
"I am very excited about working with Lindsay again," Keys added. "She's helped me reach great results in the past and we make an excellent team!"
Updated Date: Dec 24, 2016 12:34:49 IST