The Latest on the U.S. Open (all times local):
Former No. 1 Ana Ivanovic says she'll take the rest of the season off because of wrist and toe injuries.
Ivanovic, the 2008 French Open champion, tweeted Tuesday about the decision to step away from the tour until 2017 — making the announcement one week after losing in the first round of the U.S. Open.
She said she has a recurring wrist injury and was advised by her doctor to take time off. In addition, she will have surgery on a toe she broke at the Australian Open in January 2015.
Novak Djokovic, Caroline Wozniacki and Roberta Vinci will seek to return to the U.S. Open semifinals Tuesday, part of a lineup that also features two Frenchmen battling for a spot in the final four.
The No. 1-seeded defending champ Djokovic takes on ninth-seeded Jo-Wilfried Tsonga, one of three French players in the quarterfinals. The other two, 24th-seeded Lucas Pouille and 10th-seeded Gael Monfils, face off for only the second time. Monfils won the previous meeting in five sets at last year's Australian Open.
On the women's side, in a contest of unseeded players, the two-time U.S. Open runner-up Wozniacki plays Anastasija Sevastova, who had never won four straight matches at any major until now.
The other women's quarterfinal features two top-10 players: second-seeded Angelique Kerber, this year's Australian Open champ, and No. 7 Roberta Vinci, last year's U.S. Open runner-up.
The roof on Ashe may be a factor. Forecasts call for partly cloudy skies, blustery winds and a chance of afternoon showers.