Naomi Osaka records first top 10 win in more than four years to reach US Open second round
 Naomi Osaka on Tuesday recorded her first win over a top 10 player in more than four years as she secured an emphatic 6-3 6-2 victory over Jelena Ostapenko in the first round of the US Open. Osaka’s performance was as eye-catching as the giant green bow she wore as part of her outfit when…