Story so far: Fognini, Kasatkina victorious

Ninth seed Fabio Fognini beat fellow Italian veteran Andreas Seppi in the first match of the day on Court Simonne-Mathieu to reach the second round.

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The Monte Carlo Masters champion saw off the 35-year-old Seppi 6-3, 6-0, 3-6, 6-3 to set up a second-round meeting with Argentine Federico Delbonis, who ousted Guillermo Garcia-Lopez in four.

Also progressing was No.8 seed Juan Martin del Potro, who dropped the first set to last week's Geneva finalist Nicolas Jarry before completing a 3-6, 6-2, 6-1, 6-4 win on Court-Philippe Chatrier.

Those two big names join 28th seed Kyle Edmund in the second round, after the Brit wrapped up a five-set win over Frenchman Jeremy Chardy in a match suspended overnight due to darkness.

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Progressing more smoothly were French qualifier Elliot Benchetrit - who dropped just five games against Cameron Norrie to win his fourth straight match at Roland-Garros - and Taylor Fritz, a 6-1, 6-4, 6-1 winner of Australia's Bernard Tomic.

Another qualifier to advance was Swede Mikael Ymer, who beat fellow qualifier Blaz Rola for his first win in a Grand Slam main draw. Ymer last week saved six match points in a second-round qualifying victory over Johan Tatlot.

In the women's draw, last year's quarter-finalist Daria Kasatkina scored a much-needed win in the opening round.

The Russian, seeded No.21, arrived in Paris with a lean 5-10 record in 2019, but played solidly in a 6-2, 6-3 win over Italian qualifier Jasmine Paolini.

Another victor was 22nd seed Bianca Andreescu in her first match since the Miami Open in March.

The Canadian starlet, a surprise champion at Indian Wells, suffered a shoulder injury which decimated out her clay-court season, yet returned to beat Czech Marie Bouzkova 5-7, 6-4, 6-4 in a match that was also suspended for darkness from the day before.

Kasatkina next faces Puerto Rico's Monica Puig - a straight-sets winner over Belgian Kirsten Flipkens - while Andreescu tackles Sofia Kenin for a place in the last 32.

Also advancing was Romania's Irina-Camelia Begu, who trounced China's Zhu Lin 6-1, 6-1.