Overview
- Reports on Friday say the Phillies will add Keller to their 40-man and active rosters and he will make his MLB debut when he appears Saturday either as the starter or as a bulk reliever.
- Keller’s rise is the product of a long comeback: he was a 39th-round Yankees pick in 2016 who later spent time with the Red Sox and in Japan before undergoing Tommy John surgery and a second procedure that kept him mostly out of action from 2023–2025.
- After signing a minor-league deal with Philadelphia in May, Keller produced a 2.23 ERA over 36 1/3 Triple-A innings, pairing a 92.6 mph four-seam with a cutter, sinker, slider and curveball.
- Analysts note Keller’s underlying metrics, including a 4.24 FIP and a low BABIP and high strand rate, suggest some luck in his Triple-A results even as his 26% strikeout rate shows he can miss bats.
- The call-up is a clear short-term move to eat innings behind Zack Wheeler, Cristopher Sánchez, Jesús Luzardo and Aaron Nola while the Phillies continue to evaluate internal options and pursue trade help before the deadline.