Shelton, the rising 22-year-old American, made his first Masters 1000 final after beating his compatriot. Russia's Karen Khachanov is next.

Taylor Fritz and Ben Shelton won Tuesday in the quarterfinals of the National Bank Open, setting up the first all-American semifinal in an ATP Masters 1000 tournament in 15 years.

Second seed Taylor Fritz powered past No. 6 seed Andrey Rublev 6-3, 7-6(4) to reach the semifinals, striking 20 aces—including one on match point—in breezy and hazy conditions. The 27-year-old American came out blazing,