Dates: 22 May-5 June Venue: Roland Garros, Paris |
Coverage: Live text and radio commentaries of selected matches across BBC Radio 5 Live Sports Extra, the BBC Sport website and app |
Carlos Alcaraz began his French Open bid with a straight-set win over Juan Ignacio Londero.
Alcaraz is one of the favorites for the men's singles title.
Alcaraz took control after edging a tight opening set.
Felix Auger-Aliassime came back from two sets down against Juan Pablo Varillas.
The 21-year-old survived a huge scare on Court Philippe Chatrier after Varillas made a dream start to his Grand Slam debut.
Auger-Aliassime had not won a main-draw match at the French Open.
Alexander Zverev advanced with a straight-set win over Sebastian Ofner.
The third seed, 25, beat Austrian Ofner and will play either Serbian Dusan Lajovic or Argentine Sebastian Baez in the second round.
Despite being a teenager, Alcaraz has long been tipped as a future Grand Slam champion and many believe this could be the tournament where he accomplishes that feat.
The Spaniard has dominated the tour in recent weeks, winning titles in Miami, Barcelona, and Madrid.
His victories over Nadal and Zverev on the clay in Madrid has catapulted him into the running to win the French Open.
He only appeared in the French Open main draw for the first time last year, but there was a buzz around the stadium when he faced Londero.
The sixth seed Alcaraz received a rapturous reception as he walked on for his debut on the show court, with the French fans seemingly believing this would be the first of many appearances.
Unforced errors from Londero allowed Alcaraz to break at crucial moments and proved to be the turning points in the first two sets.
The Spaniard dominated the rest of the way and will face Albert Ramos-Vinolas in the second round.
After reaching his first major quarter-final at Wimbledon last summer, Auger-Aliassime made the US Open semi-finals before a run to the last eight at the Australian Open in January.
The Canadian appeared to be on his way out of Paris when Varillas broke serve twice in the opening two sets.
Auger-Aliassime fought back from a set down in the third to level the match and then dominated the fourth to win it.
The world number nine was able to break in the eighth game of the deciding set to complete a fine comeback and win his first French Open main draw win at the third attempt.
Auger-Aliassime said that he had to work hard to get his first victory.
It was a good match and the opponent played well. I was very satisfied with the way I finished. I needed a bit more space and a bit more time and I have a few tools in my game to help me get that.
Next for Auger-Aliassime will be Carabelli, who won a historic final-set tie-break at the French Open to beat Russian Aslan Karatsev.
Fans are seeing a final-set tie-break at the tournament for the first time, with all four Grand Slams agreeing to use a first-to-10 points method.
Dominic Thiem lost his 11th match in a row as he fell in straight sets to Hugo Dellien.
Argentine 15th seed Diego Schwartzman beat Russian Andrey Kuznetsov, while Grigor Dimitrov beat American Marcos Giron.
Russian 21st seed Karen Khachanov beat Portuguese qualifier Nuno Borges, while American John Isner beat Frenchman Quentin Halys.
Dutch 26th seed Botic van de Zandschulp defeated Russian Pavel Kotov.
Alejandro Davidovich Fokina, the 25th seed from Spain, was knocked out by Tallon Griekspoor of the Netherlands, while the 31st seed from the US was beaten by Pablo Cuevas.