Wawrinka sees off determined Dimitrov in Cincinnati
3:23pm PDT - August 13th, 2019 roger federer - The HinduSwiss Stan Wawrinka overcame battling Bulgarian Grigor Dimitrov 5-7 6-4 7-6(4) in a roller-coaster first-round match at the Cincinnati Masters on Tuesday.Dimitrov clawed back from a double break down