U.S. Open preview

What: Fourth and final Grand Slam tournament of the year.

When: Monday through Sept. 11.

Where: USTA Billie Jean King National Tennis Center in New York. A $150 million retractable roof has been installed at Arthur Ashe Stadium, which will allow play when it rains.


2015 singles champions: Novak Djokovic , Flavia Pennetta.

Men's top seeds

1. Novak Djokovic, Serbia

2. Andy Murray, Britain

3. Stan Wawrinka, Switzerland

4. Rafael Nadal, Spain

5. Milos Raonic, Canada

6. Kei Nishikori, Japan

7. Marin Cilic, Croatia

8. Dominic Thiem, Austria

woMen's top seeds

1. Serena Williams, United States

2. Angelique Kerber, Germany

3. Garbine Muguruza, Spain

4. Agnieszka Radwanska, Poland

5. Simona Halep, Romania

6. Venus Williams, United States

7. Roberta Vinci, Italy

8. Madison Keys, United States

by the numbers

22: Grand Slam singles titles won by Serena Williams, sharing the professional-era record with Steffi Graf. Only Margaret Court has won more, 24 — 11 as a professional, 13 as an amateur.

1999: The last time the U.S. Open field did not include Roger Federer. Federer is taking the rest of the season off to let his left knee heal.

$46.3 million: Total payout to players, a tournament record.

Associated Press