World champion and world No. 1 Kento Momota defended his men's singles title with a straight-sets win, while Akane Yamaguchi beat Nozomi Okuhara in an all-Japanese women's singles decider at the Japan Open on Sunday.In front of the cheering home crowd, top seed Momota won a tight first game against Jonatan Christie of Indonesia 21-16 before cruising 21-13 in the second.It is the first time that Japan has won both the men's and women's singles titles at the Japan Open, an HSBC World Tour Super 750 tournament held since 1982."I didn't get good results last week and I wasn't confident of a rep…READ FULL ARTICLE