Eiberson Castellano: Everything you need to know

The Rockies signed Castellano to a minor-league contract Tuesday, Aaron Gleeman of The Athletic reports. Castellano was taken by the Twins in the Rule 5 Draft last offseason before being returned to the Phillies. The 24-year-old held a 5.40 ERA and 39:14 K:BB over 35 innings in 2025 at Double-A Reading.

Castellano (undisclosed) was activated from the 7-day injured list July 26. Castellano missed nearly two months on the IL due to an undisclosed injury. He gave up one run in his first outing since returning July 26 against Double-A Binghamton but has been solid since, posting a pair of scoreless appearances (one inning each).

Double-A Reading placed Castellano on its 7-day injured list Saturday due to an undisclosed injury. After about a three-week stay on the shelf due to another unspecified injury, Castellano was activated from Reading's IL last Thursday. He made a relief appearance in a 5-4 loss to Erie that same day and gave up three earned runs on two hits and two walks over one inning. It's unclear if Castellano aggravated the previous injury or suffered a new one in that relief appearance, but Reading moved quickly to deactivate the 24-year-old righty once again. Castellano is without a clear timeline to return to action.