In the final month of the season and into the postseason, Freese saw most of his action in a righty-lefty platoon at first base with Max Muncy. He thrived in that role, hitting .385 with two home runs and nine RBIs. Freese hit a leadoff home run in Game Six of the 2018 National League Championship Series. He started at first base in Game One of the 2018 World Series. Freese hit another leadoff home run in Game Five, which turned out to be the only run of the game as the Dodgers lost the game and the series. Freese batted .417 in the 2018 World Series and had a .773 slugging percentage in the 2018 postseason.