Karen Khachanov rallied to defeat top seed Alexander Zverev and book an ATP Toronto Masters title clash with Ben Shelton, who beat second seeded Taylor Fritz on Wednesday.Shelton, seeded fourth, hammered Fritz 6-4,

American fourth seed Ben Shelton battled from a set down to clinch his first ATP Masters 1000 title at the Canadian Open in Toronto on Thursday, defeating Russian 11th seed Karen Khachanov 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