Ben Shelton won the National Bank Open on Thursday night for the third and biggest title of his young career Thursday night, rallying to beat 11th -seeded Karen Khachanov of Russia 6-7 (5), 6-4, 7-6 (3).

At the age of 22 years and 291 days, Ben Shelton is the youngest American to defeat four ATP top-20 players at a single event since Pete Sampras (22 years, 200 days) at Indian Wells in 1994

Ben Shelton is headed to his first ATP Masters 1000 final after taking down World No. 4 Taylor Fritz at the National Bank Open in Toronto.