In the ninth inning of Game 5 of the World Series, McCormick's catch of a J. T. Realmuto fly ball at the wall at Citizens Bank Park in Philadelphia helped preserve a 3–2 lead for an eventual Astros win. After colliding with the fence, his landing left a starfish-shaped imprint on the warning track dirt on which the outline of his jersey number 20 was visible. The Astros defeated the Phillies the following game for their fourth win in the best-of-seven to give McCormick his first career World Series title.