World No. 1 and defending champion Novak Djokovic cruised past Japan's Yoshihito Nishioka 6-3, 6-1, 6-0 on Monday to advance to the French Open's second round in a comfortable start to his quest for a record-equaling 21st Grand Slam.

The Serb, who turned 35 on Sunday, needed less than two hours to beat the Japanese world No. 99 in his first Grand Slam this year after missing the Australian Open.

"I think he has to be pleased with the start of the match, until I really got used to and kind of adapted to his game," Djokovic told reporters. "The first set was close but I cruised through the second and third (sets).