Japanese world No. 2 Naomi Osaka made a perfect start to her Olympic career Sunday with a 6-1, 6-4 win over China's Zheng Saisai in the Tokyo Games women's singles tennis competition.Sporting long braids with red and white elements to match her outfit and the Japan national flag, second-seed Osaka stormed into a 5-0 lead in stamina-sapping heat at Ariake Tennis Park before wrapping up the first set in 32 minutes.Zheng dug deep in the second set but Osaka, playing in her first match since withdrawing from the recent French Open to take a mental health break, was never seriously troubled and …READ FULL ARTICLE