Overview
- The Rockies claimed right-hander Blas Castaño off waivers Tuesday and assigned him to Triple-A Albuquerque.
- Seattle had designated the 27-year-old for assignment to open a 40-man roster spot, a move that places a player on waivers for other clubs to claim.
- Colorado designated left-hander Luis Peralta for assignment in the corresponding move.
- Castaño has opened 2026 with a 1.42 ERA across six short relief outings for Triple-A Tacoma.
- With only one MLB appearance in 2025, his remaining minor-league options give Colorado flexible pitching depth.