Open Extended ReactionsTORONTO -- 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, seeded fourth, became the first American winner in the Masters 1000 hard-court event since Andy Roddick in 2003. Shelton also won on hard courts in Tokyo in 2023 and on clay in Houston last year. "I feel like it was a perfect storm for me this week," Shelton said. "It's a positive, a great tournament, a great run," Khachanov said.