2019 would also see him make his postseason debut: pinch-running for Ryan Zimmerman in the 8th inning of the Wild Card Game against the Milwaukee Brewers, he would score the tying run on Juan Soto’s single; acting aggressively due to Stevenson’s speed, Brewers right fielder Trent Grisham misplayed the ball, allowing the eventual winning run to score as well. While not on the playoff roster for the rest of the Nationals’ championship run, Stevenson would take the field before Game 3 of the World Series to catch the ceremonial first pitch from Apollo 11 astronaut Buzz Aldrin.