Former runner-up Stefanos Tsitsipas kicked off his French Open campaign with a 7-6 (9-7) 6-4 6-1 victory over Hungarian journeyman Marton Fucsovics on Monday.
The ninth-seeded Greek, who won the Monte Carlos Masters this year, showed his range of qualities on clay to set up a second-round meeting with German Daniel Altmaier.
The 25-year-old wrapped up victory when Fucsovics sent a return wide under the roof on Court Suzanne Lenglen.
In the women's competition, top seed Iga Swiatek cruised past qualifier Leolia Jeanjean 6-1 6-2 to launch her title defence at the tournament where she seeks a fourth title on the Paris clay.
The 22-year-old world number one, who has won the French Open three times in the last four years, arrived in Paris on the back of a 12-match winning streak on clay, having rolled through the tournaments in Madrid and Rome.
"Matches like that give me a lot of satisfaction," said Swiatek, who next faces former world number one Naomi Osaka in the second round. "Overall, I am happy with my performance."
UAE Team Emirates-XRG: Pogačar clinches fourth Tour de France title
English grit beats Spanish skill to secure Euro glory
'Lucky' De Minaur saves three match points to lift Washington Open title
Piastri beats Norris in rain-delayed Belgian Grand Prix
India dig deep with bat to draw fourth Test against England
