Overview
- The Cubs agreed to the minor‑league contract on Wednesday, May 27, and Bummer is expected to report to Triple‑A Iowa as organizational depth.
- Atlanta released Bummer after a poor start to 2026 that included a six‑run, one‑inning outing on May 18 and a 7.63 ERA over 19 appearances.
- Bummer is a 10‑year veteran with a career ERA near 3.94 but has seen velocity drop and his strikeout and walk rates worsen in 2025–26.
- Payroll terms make this a low‑risk move for Chicago because Atlanta continues to pay the bulk of his $9.5 million 2026 salary and the Cubs would owe only the prorated league minimum if he is called up.
- The signing gives the Cubs short‑term left‑hand insurance while their bullpen deals with injuries and uneven form, but Bummer’s recent metrics leave his return to reliable major‑league work uncertain.