Overview
- The NL West rivals completed a one-for-one trade, with both clubs announcing McCarthy to Colorado and Grosz to Arizona.
- Diamondbacks GM Mike Hazen said the move was driven by roster construction concerns and the club’s glut of outfielders.
- McCarthy offers elite sprint speed and defensive versatility but is coming off a .204/.247/.345 line in 2025 with time in Triple-A Reno.
- Grosz, ranked among Colorado’s top 20 prospects by MLB Pipeline, projects as a back-end starter or multi-inning reliever after a 4.67 ERA, 135-strikeout High-A season.
- Colorado’s 40-man roster is full, so an additional move is expected when the team finalizes pitcher Michael Lorenzen’s contract.