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

Fourth-seeded Ben Shelton beat second-seeded Taylor Fritz 6-4, 6-3 in an all-American semifinal match Wednesday night in the National Bank Open Open.

Ben Shelton won the National Bank Open on Thursday night for the third and biggest title of his young career, rallying to beat 11th-seeded Karen Khachanov of Russia 6-7 (5), 6-4, 7-6 (3). The 22-year-old Shelton,