Roger Federer returns to the French Open for the first time in four years to challenge Rafael Nadal and Novak Djokovic's bids for more records.
Nadal is chasing a record-extending 12th Roland Garros title, while Djokovic can become the first man in the Open era to hold all four Grand Slam titles at once for a second time.
Federer, 37, missed the 2016 event with a back injury and skipped the past two clay-court swings to preserve his body.
The event in Paris begins on Sunday.
Swiss Federer, a 20-time Grand Slam champion, reached the Madrid Open quarter-finals this month in his first clay-court tournament in three years.