Rockies Add Castaño, Shop Peralta

0:00On April 21st, Rocky's just scooped up right-hander Blas Castanio off waivers from the Mariners. Both teams made the announcement after Seattle designated him for Simon a week back. Colorado immediately optioned the 27-year-old to triple A Albuquerque, and in a matching move they designated lefty Luis Peralta for. Assignment. Castanio signed with the Yankees out of the Dominican Republic, got released last summer, then the Mariners grabbed him. He put up a 4.38 earned run average over 125 innings in the Mariners last year, mostly in the hitter friendly. Pacific Coast League. This year he's been relieving in triple A with a sharp 1.42 earned run average in a small sample. He's got a 5-pitch mix that pops sink or leading the way at 94 mph, plus cutter, slider, change up. Rocky's loved that variety, especially with their pitching staff posting the worst earned run average in baseball last year at 5.99.

1:00They need arms, bed, whether as a starter or reliever, and he can stay in the minors for now. Meanwhile, Peralta, who's 25 and the younger brother of Freddie Peralta, came over from the pirates in last year's deadline deal. He dominated minor league relief in 2024 with the sub-1 earned run average and huge strikeouts, even flashed in the majors. But this year, everything fell apart, earned run averages over 9 in the bigs and minors Sky High Walks. Rocky's a shopping Peralta now, with waver time giving them up to 5 days for tray talks. His options remain, so a new team could stash him in triple A and rebuild that strikeout magic from last year. Depth moves like these keep the pitching pipelines flowing in Colorado. That's the story for today, MLB News Today, driven by AI.