Eiberson Castellano

Eiberson José Castellano (born May 9, 2001) is a Venezuelan professional baseball pitcher for the Colorado Rockies of Major League Baseball (MLB). He debuted in MLB in 2026.

Professional career

Philadelphia Phillies Castellano signed with the Philadelphia Phillies as an international free agent on July 2, 2018. He did not pitch at all during the 2019 season, then was unable to pitch in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic. Castellano finally made his professional debut with the Aguilas del Zulia of the Venezuelan Professional Baseball League later that year. Castellano made his affiliated debut in 2021 with the Dominican Summer League Phillies White, posting a 1.09 ERA in 33 innings of work. He was promoted to the Clearwater Threshers of the Single-A Florida State League for the 2022 season, where he would record a 3.51 ERA in innings of work. Returning to Clearwater for the 2023 season, Castellano's results backed up, with his ERA ballooning to 5.04 in 50 innings of work. On March 25, 2025, Castellano was returned to the Phillies organization. He made 21 appearances split between Jersey Shore and Reading, posting a 4-3 record and 6.44 ERA with 39 strikeouts across innings pitched. Castellano elected free agency following the season on November 6.

Colorado Rockies On December 5, 2025, Castellano signed a minor league contract with the Colorado Rockies. He began the 2026 season with the Double-A Hartford Yard Goats, recording a 2.72 ERA across 10 starts before being promoted to the Triple-A Albuquerque Isotopes. On June 13, 2026, Castellano was promoted to the major leagues for the first time.