French Open preview
What: Second Grand Slam tournament of the year
When, where: Sunday-June 5 at Roland Garros in Paris
2015 singles champs: Stan Wawrinka, Serena Williams
Men's top seeds
1. Novak Djokovic, Serbia
2. Andy Murray, Britain
3. Stan Wawrinka, Switzerland
4. Rafael Nadal, Spain
5. Kei Nishikori, Japan
6. Jo-Wilfried Tsonga, France
7. Tomas Berdych, Czech Republic
8. Milos Raonic, Canada
women's top seeds
1. Serena Williams, United States
2. Agnieszka Radwanska, Poland
3. Angelique Kerber, Germany
4. Garbine Muguruza, Spain
5. Victoria Azarenka, Belarus
6. Simona Halep, Romania
7. Roberta Vinci, Italy
8. Timea Bacsinszky, Switzerland
By the numbers
21 Consecutive Grand Slam matches won by Novak Djokovic.
70-2 Rafael Nadal's career record at Roland Garros, where he has won a record nine championships.
21 Grand Slam singles trophies earned by Serena Williams, one shy of Steffi Graf's professional-era record.
1999 The last time Roger Federer, 34, did not take part in the main draw in singles at a Grand Slam event. Federer withdrew from the French Open on Thursday.