Scouting Report
Updated May 20, 2026
Gabe Speier, 31-year-old left-handed pitcher for the Seattle Mariners, has been on the 15-day injured list since May 4, 2026, with left shoulder inflammation. He is currently on a rehab assignment with High-A Everett AquaSox as of May 20, 2026. Speier is a veteran reliever who debuted with the Kansas City Royals in 2019 and has been a consistent bullpen arm for the Mariners over the past four seasons. He earned a spot on the 2026 Team USA World Baseball Classic roster, indicating his value as a reliable relief pitcher. The Mariners are taking a cautious approach to his recovery, having him pitch in rehab games before returning to MLB action.
Strengths
- + Veteran reliever with 7+ years MLB experience
- + Consistent and reliable bullpen arm for Mariners over 4 seasons
- + Selected for 2026 Team USA World Baseball Classic roster
- + Successfully completed first rehab outing with 20+ pitches in bullpen session
- + Mariners taking measured approach to recovery
- + No reports of setbacks during rehab process
Weaknesses
- - Left shoulder inflammation requiring IL placement
- - Inactive since May 4, 2026
- - Age 31 with shoulder injury history
- - Shoulder injuries can be recurring concern for pitchers
- - Extended recovery timeline suggests moderate severity
Injury Status: IL-15 -- Left shoulder inflammation; placed on 15-day IL on May 4, 2026; began rehab assignment with High-A Everett AquaSox on May 20, 2026
About
Gabe Speier is a rp for the Seattle Mariners.
Player Overview
RP
Seattle Mariners