Japan's Naomi Osaka fell short in her bid for her first WTA Tour title in four years, losing to 18-year-old Canadian Victoria Mboko in Thursday's final at the National Bank Open in Montreal.The home favorite came from a set down to beat the former world No. 1 and four-time Grand Slam champion 2-6, 6-4, 6-1. Mboko converted eight of her nine break points while overcoming 13 double faults.Following the conclusion of the WTA 1000 event, Mboko jumped 61 spots to a career-high 24th in the rankings, while Osaka moved up to 25th from 49th.The 27-year-old Osaka last won a WTA tournament at the Aust…READ FULL ARTICLE