American fourth seed Ben Shelton battled from a set down to clinch his first ATP Masters 1000 title at the Canadian Open on Thursday, defeating Karen Khachanov of Russia 6-7(5) 6-4 7-6(3).

The world number seven capped off an impressive week that saw him beat Italian 13th seed Flavio Cobolli, Australian ninth seed Alex de Minaur and American second seed Taylor Fritz on his way to achieving his first Masters 1000 title and the biggest title of his career.

The 22-year-old is the youngest American man to win a Masters 1000 since former world number one Andy Roddick at Miami in 2004.

Khachanov seemed to be on course for victory when he took a 5-3 lead in the opening set, but Shelton fought back to break serve and take a 6-5 lead. Khachanov, 29, then recovered to force a tiebreak and capital

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