Overview
- Treinen felt a shoulder problem on a single warmup pitch during Saturday's game in San Francisco, left the bullpen with a trainer, and did not return.
- Manager Dave Roberts said the injury effectively ends Treinen’s 2026 season and that the right‑hander will undergo imaging to determine the extent of the damage.
- The Dodgers had reinstated Treinen on Sept. 2 after about 10 weeks on the injured list for right‑elbow inflammation and then limited him to seven appearances while managing his workload.
- Treinen, 38, is a veteran with extensive playoff experience whose sudden loss removes a trusted late‑inning option and complicates postseason bullpen roles and matchups.
- The team will place Treinen on the injured list and add a player for Sunday’s regular‑season finale, and medical staff must still determine whether the new shoulder issue is related to his prior labrum and rotator‑cuff surgery.