Canada's Felix Auger-Aliassime charged back from a two-set deficit to post his first-ever win at Roland Garros.
The Montreal native earned a 2-6, 2-6, 6-1, 6-3, 6-3 comeback victory over qualifier Juan Pablo Varillas of Peru during first-round action Sunday at the French Open.
Auger-Aliassime, who is the No. 9 seed, will meet Argentina's Camilo Ugo Carabelli in the second round.
Denis Shapovalov of Richmond Hill, Ont., plays Holger Rune in the opening round Tuesday.
Bianca Andreescu of Mississauga, Ont., Leylah Annie Fernandez from Laval, Que., and Vancouver's Rebecca Marino are in the women's draw.
Fernandez, the No. 17 seed, opened her tournament with a 6-0, 7-5 win over France's Kristina Mladenovic. The Canadian saved two set points in the second set.
Marino, who had to qualify for the main draw, was eliminated on Sunday after losing 7-5, 6-0 to American Coco Gauff.
Andreescu starts play Monday against Belgium's Ysaline Bonaventure.
