The Arizona Diamondbacks' 40-man roster was last updated on November 2, 2026, according to the team's official roster tracker. The update comes as the club continues its offseason preparations following the 2026 season.
Earlier in the year, the Diamondbacks participated in the Mexico City Series, facing the San Diego Padres at Estadio Alfredo Harp Helu on April 26, 2026. Players lined up along the base path during the national anthem ahead of the international regular-season game.
