Djokovic, the 2016 Roland Garros champion and former world number one, is seeded 20 this year after struggling to rediscover his best form after returning from a right elbow injury. The Serbian 12-time Grand Slam champion fired 39 winners but 33 unforced errors and was broken three times by Munar, the world 155. The 21-year-old, a winner of three Masters titles, is yet to reach a Grand Slam quarter-final and was knocked out in the first round at Roland Garros last year. - Halep fights back -World number one Halep fought back after a disastrous opening set to beat American Alison Riske 2-6, 6-1, 6-1 in their delayed first-round match. Serena Williams, who made her Grand Slam return with a singles win on Tuesday, partnered sister Venus in a 4-6, 6-4, 6-1 doubles victory over Japan's Shuko Aoyama and Miyu Kato.

Source: The Nation Bangkok May 30, 2018 19:41 UTC