Atlanta Braves star Ronald Acuna Jr. made a champion-esque move this week ... by visiting and donating 133,000 face masks to an Atlanta children's hospital the day after winning the World Series!!
The awesome visit happened on Thursday -- right after Acuna's Braves took home the Commissioner's Trophy and beat the Houston Astros in Game 6 of the 2021 Fall Classic.
The outfielder popped up at the Children's Healthcare of Atlanta -- surprising fans including 11-year-old Nolan Madsen, who's a patient at the Aflac Cancer and Blood Disorders Center.