Dimitrov beats Del Potro for first time to reach Cincinnati quarters

FILE PHOTO - Aug 17, 2017; Mason, OH, USA; Grigor Dimitrov (BUL) returns a shot against Juan Martin del Potro (ARG) during the Western and Southern Open at the Lindner Family Tennis Center. Mandatory Credit: Aaron Doster-USA TODAY Sports

(Reuters) - Grigor Dimitrov beat big-hitting Argentine Juan Martin del Potro for the first time in six career attempts to book a place in the last eight at the Cincinnati Open on Thursday.

The seventh-seeded Bulgarian advanced to his eighth ATP World Tour Masters 1000 quarter-final with a 6-3 7-5 victory over Del Potro, who struggled with the intense heat in the closing stages of the one hour, 39 minute match.