Colorado Rockies pitching prospect Eiberson Castellano has been ranked No. 27 in the organization's 2026 prospect rankings, according to a report from SB Nation's Zeke Perez Jr. published on November 5, 2026.
The right-hander made his major league debut on June 14, 2026, at Las Vegas Ballpark against the Athletics. Castellano, wearing number 55, took the mound in a game captured by photographer Kyle Cooper for the Colorado Rockies and Getty Images.
The ranking places Castellano among the Rockies' developing talent as the franchise continues to build its future pitching core.
