TOKYO (AP)—Top-seeded Juan Martin del Potro moved into the second round of the Japan Open with a 4-6, 6-4, 6-3 victory over Marcos Baghdatis of Cyprus on Tuesday.

Playing under the roof at Ariake Colosseum because of rain, del Potro came back from a sluggish first set to secure the win in just over two hours.

His opponent in the second round will be Argentine compatriot Carlos Berlocq.

Defending champion Kei Nishikori, seeded fourth, was scheduled to play unseeded Jurgen Melzer of Austria later Tuesday.