Overview
- The 30-year-old right-hander agreed to two years and $22 million, slotting in behind closer Jhoan Duran as a primary setup option.
- President Dave Dombrowski called Keller “one of the best in the business” as the Phillies reshape the bullpen, with recent additions including Jonathan Bowlan and Zach Pop.
- In his first full season as a reliever with the Cubs, he recorded a 4–2 mark with a 2.07 ERA, 0.96 WHIP, and 75 strikeouts against 22 walks in 69 2/3 innings over 68 games.
- He made his playoff debut in 2025 and delivered a 1.59 ERA across five appearances, earning two saves and a hold.
- Following venous thoracic outlet surgery in 2023, his four-seam velocity climbed from about 93.8 mph in 2024 to roughly 97.1–97.2 in 2025, and he now leans on a five-pitch mix refined with pitching coach Caleb Cotham.