Tallon Griekspoor defeated Gabriel Diallo 7–5, 7–6, 1–6, 6–3 in the first round of Roland Garros on clay, confirming his status as pre-match favourite at odds of 1.61. Diallo, the underdog at 2.49, mounted brief resistance in the third set but could not sustain momentum as Griekspoor regained control in the fourth. The Dutch player's victory came after two closely contested opening sets that went to a tiebreak, suggesting competitive tennis before Diallo's capitulation in the latter stages. Griekspoor advances to the second round with a commanding finish.