US Open champion Dominic Thiem advanced to the second round of the French Open by beating 2014 US Open champion Marin Cilic 6-4, 6-3, 6-3.
The third-seeded Thiem, of Austria, won his first major tournament at Flushing Meadows two weeks ago and is among the favorites again at Roland Garros after losing the past two finals to Rafael Nadal.
Thiem broke the imposing Cilic’s serve six times in cool conditions on Court Philippe Chatrier.
Cilic, of Croatia, led 2-0 in the third set, but Thiem reeled off the next five games before Cilic held again.
Thiem will next face qualifier Jack Sock; Sock beat fellow American Reilly Opelka 6-4, 6-4, 6-3.