Jack Draper and Dan Evans set up a possible last-four meeting after both continued their winning ways at the National Bank Open.
Draper reached his first Masters 1000 quarter-final, one day after defeating Stefanos Tsitsipas in his maiden victory over a top 10 player, when 17th seed Gael Monfils retired hurt in Montreal in the second set with the British player up 6-2, 0-2.
The world No 82, who came through qualifying to reach the main draw, frequently relied on his speed and reach as he claimed a fast first set.
Monfils collapsed not long after securing a break early in the second, prompting Draper to cross the court to help him into a chair as the Frenchman cried out and clutched at his right leg.
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