World No. 9 Kei Nishikori advanced to the second round of the French Open on Tuesday, when Japan's women crashed out one after another.
In the women's draw, Naomi Osaka, Miyu Kato and Nao Hibino all failed to make it out of the first round at Roland Garros.
Nishikori came from a set down to defeat big serving Thanasi Kokkinakis of Australia 4-6, 6-1, 6-4, 6-4 to advance to a second-round battle with France's Jeremy Chardy. Nishikori's best result here came two years ago, when he reached the quarterfinals.