Track Record: Nuñez spent seven years in the Cubs system after signing in 2017, reaching Triple-A Iowa while flashing premium stuff and erratic control. The Padres signed him as a minor league free agent before the 2025 season and helped him throw enough strikes to finally reach the majors. The A’s acquired him at the trade deadline in the Mason Miller-Leo De Vries deal, and he split time between Triple-A and the majors, issuing as many walks (11) as strikeouts in 12.2 big league innings across both organizations.
Scouting Report: Nuñez’s electric arm talent gives him one of the best fastball-slider pairings in the organization. He has plus-plus fastball velocity at 97-99 mph and reaches 101 from a low release height that adds deception despite below-average extension. Nuñez went to an upper-80s slider entering 2025 that was a better fit for his arm slot, and it’s a plus pitch that minor league hitters missed more than half the time. He relies almost entirely on those pitches, rarely using a curveball that was once a bigger part of his arsenal. Corralling his arm speed and finding consistent control remains his biggest challenge. Nuñez made progress after slightly closing off his delivery in 2025, throwing more strikes in the minors, but his strikes were more scattered in the majors.
The Future: The 26-year-old is a pure reliever with late-inning upside and up-down volatility depending on how the strikes net out.