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,

The 22-year-old Shelton, seeded fourth, became the first American winner in the Masters 1000 hard-court event since Andy Roddick in 2003.

Karen Khachanov rallied from 3-1 down in the final set tiebreaker to defeat top seed Alexander Zverev, 6-3, 4-6, 7-6 (7/4), on Wednesday (Thursday in Manila) to reach the final of the ATP Toronto Masters.