On opening day of the 1940 season, Hemsley caught Feller's no-hitter, becoming the only catcher to catch an opening day no-hit game. He also drove in the only run of the game with a triple. His consistency in the 1940 season saw him lead the American League catchers with a .994 fielding percentage, and led to a couple MVP votes as well as his fourth All-Star appearance.
Hemsley made significant contributions on the first day of the 1940 baseball season, catching Feller's perfect game and driving in the only run with a triple. His consistent performance throughout the 1940 season led to his recognition as the top catcher in the American League and earned him an All-Star appearance.