Castro, 27, served up 15 runs -- 11 earned -- in 13 1/3 innings of work at the MLB level last year with the Guardians. His career ERA is 6.00. He's a depth piece for Washington.

Castro was claimed off waivers by the Orioles near the end of the season from the Guardians, but he was designated for assignment in October without throwing a pitch for Baltimore. He'll be organizational depth for someone in 2023.

Castro went unclaimed on waivers after being designated for assignment last week by the Orioles and will likely remain with the organization as extra relief depth heading into the 2023 campaign.

Castro was claimed off waivers from the Guardians in early September but didn't wind up seeing any action with the Orioles and is now in DFA limbo. The 27-year-old has a career 6.00 ERA in 38 relief appearances.