Pederson was demoted to the minor leagues in late 2017 and initially left off the Dodgers' playoff roster, but went on to hit three home runs in the 2017 World Series, which the Dodgers lost to the Houston Astros. Pederson returned to the World Series in 2018 with the Dodgers, hitting a home run in Game 3 as the Dodgers lost to the Boston Red Sox. In 2019, he had the best season of his career up to that point, hitting 36 home runs and participating in his second Home Run Derby. He batted just .190 in 2020 but had four hits in 10 at bats in the World Series as the Dodgers won the championship.