Montreal's Gabriel Diallo has advanced to his first Masters-level quarterfinal with a comeback 5-7, 7-6 (7), 6-4 fourth-round ...

Gabriel Diallo saved three match points to upset world No. 16 Grigor Dimitrov and reach his first Masters 1000 quarter-final at the Madrid Open.

It was a hard-earned, two and a half hour battle for the top seed to advance into the semifinals of the Madrid Open.