Updated

World No. 1 Novak Djokovic was an easy second-round winner Thursday at a rainy French Open.

Djokovic dismantled promising Argentine left-hander Guido Pella 6-2, 6-0, 6-2 in 1 hour, 26 minutes on Court Chatrier.

Rain delayed play for more than three hours on Day 5 at Roland Garros.

The reigning Australian Open champion Djokovic was last year's French and U.S. Open runner-up. He lost to Rafael Nadal in a marquee finale in Paris.

Djokovic needs a French Open title to complete a career Grand Slam.

Up next for the Serbian superstar will be 26th-seeded rising Bulgarian Grigor Dimitrov, who topped 19-year-old French wild card Lucas Pouille 6-1, 7-6 (7-4), 6-1 on a wet, chilly day. The 22-year-old Dimitrov beat Djokovic on red clay at the Madrid Masters just three weeks ago.

Thirteenth-seeded Japanese Kei Nishikori held off Slovenian Grega Zemlja 6-1, 5-7, 6-1, 6-4, while 16th-seeded German Philipp Kohlschreiber advanced via walkover when Taiwan's Yen-Hsun Lu pulled out of the draw with an ankle injury.

Also on Day 5, 27th-seeded Italian Fabio Fognini foiled Czech Lukas Rosol 6-2, 7-6 (7-3), 2-6, 6-1 and Romanian veteran Victor Hanescu was leading Dmitry Tursunov 6-4, 6-6 when the oft-injured Russian retired due to a left thigh problem.