The Yankees optioned Castro to Triple-A Scranton/Wilkes-Barre on Friday.
Castro was added to the 40-man roster late in the 2025 campaign but didn't appear in any big-league games. The 27-year-old was in contention to land a spot in the bullpen for the upcoming season, but despite posting a 2.70 ERA and picking up two saves and two holds across 10 innings this spring, he'll start the year at Triple-A. If the Yankees' bullpen struggles our deals with injuries, Castro could be one of the first options to be recalled.