In 1902, Freeman returned to playing as a right fielder, which was his better position, and led the American League with 121 RBIs. In 1903, he helped Boston to the inaugural World Series by leading the league in both home runs (13) and RBIs (104); in doing so, Freeman became the first player to have led both the National League and the American League in home runs. On June 21, 1903, he hit for the cycle, the first Americans/Red Sox player to do so. The 1903 World Series was the only postseason series that Freeman ever played in, and it proved to be lackluster by his own standards—he recorded an average of .281 (9-for-32) with three triples and four RBIs over the course of eight games, as Boston defeated the Pittsburgh Pirates.