Colorado Rockies prospect Welinton Herrera, ranked No. 28 in the organization's 2026 prospect list, made his major league debut on May 25, 2026, against the Los Angeles Dodgers at Dodger Stadium. Herrera wore number 59 in the game at Los Angeles.
The appearance marks Herrera's first taste of the majors as part of a series evaluating the Rockies' top young talent for the 2026 season.
