Simona Halep made the announcement on Twitter, four weeks after she was knocked out of the French Open.
French Open: Italian qualifier Martina Trevisan, ranked 159, had not won a Grand Slam main draw match before this tournament.
French Open: Simona Halep, top seed and world number two, suffered a humiliating straight-sets loss to 19-year-old Iga Swiatek of Poland in the last 16.
French Open 2020: Rafael Nadal booked a last-16 berth, and is yet to drop a set in Paris.
French Open 2020: Simona Halep won the Roland Garros in 2018.
Rafael Nadal has yet to drop a set in Paris against opponents with a combined ranking of 319, but the Spaniard knows tougher examinations await in his pursuit of Roger Federer's record 20 major titles.
French Open: Simona Halep beat fellow Romanian Irina-Camelia Begu 6-3, 6-4 to advance to the third round at Roland Garros.
Rafael Nadal looks to build on a promising start to his quest to match Roger Federer's 20 Grand Slam titles at the French Open on Wednesday while Serena Williams faces a familiar foe in round two of her latest push to equal Margaret Court's all-time mark.
Opening day will see 2018 champion Simona Halep start her bid for a third major while 40-year-old Venus Williams kicks off her 23rd French Open. Andy Murray takes on Stan Wawrinka in the day's marquee tie.
Simona Halep holds a 20-2 record this season and is unbeaten since January -- her only losses came to Aryna Sabalenka in Adelaide and Muguruza in the Australian Open semi-finals.
Simona Halep will be entering the French Open with a 20-2 record this season.
Simona Halep won her first Italian Open on Monday after defeating defending champion Karolina Pliskova, who retired injured in the final.
Top seed Simona Halep ousted Spaniard Garbine Muguruza in three sets to advance to her third final at the Italian Open.
Simona Halep and defending women's champion Karolina Pliskova both eased into the quarter-finals of the Italian Open on Friday.
Rafael Nadal will be looking for his 13th Rolland Garros title at the 2020 French Open.
World number one Novak Djokovic, a four-time Rome winner and five-time runner-up, lost to Rafael Nadal last year in the final.
World number one and defending French Open champion, Ashleigh Barty said it was a "difficult" decision but the health of her family and team came first.