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 is the youngest American to achieve successive ATP top 10 wins in a Masters 1000 quarter-final and semi-final since Pete Sampras (20 years, 364 days) in Cincinnati in 1992. He has also become the youngest American to reach an ATP Masters 1000 final since Andy Roddick (21 years,

Ben Shelton and Taylor Fritz were left waiting to take to the court at the Canadian Open as the electronic line-calling system suffered issues.