World No. 1 Iga Swiatek began her quest for Olympic gold with a hard-fought 6-2, 7-5 victory over Romania's Irina-Camelia Begu amid rainy conditions at Roland Garros. Swiatek, who recently won her fourth French Open title, had to rally from a 3-5 deficit in the second set before clinching the match with four consecutive games. The opening day of tennis was marred by heavy rain, frustrating many fans who queued for tickets to the main courts, while play on uncovered courts was delayed. Men's top seed Novak Djokovic also advanced with a commanding 6-0, 6-1 win over Matthew Ebden. Carlos Alcaraz and Rafa Nadal are set to feature prominently in the evening session, competing in their respective matches and doubles. Swiatek's next challenge will be against either Nadia Podoroska or Diane Parry in the second round, aiming to improve on her previous Olympic performance.