Overview
- Brash felt renewed tightness in his right lat after a bullpen in Boston this week and was shut down from throwing while the team ordered an MRI.
- Mariners general manager Justin Hollander said Brash repeatedly feels fine on flat ground and in bullpens but then experiences post-session lat tightening that stops him from advancing to live batting practice or game work.
- Brash has been sidelined since early June with the same right-lat strain and was moved to the 60-day injured list on August 20, meaning any activation would require clearing a 40-man roster spot.
- When available this season he has been highly effective, posting a 0.54 ERA with 15 strikeouts in 16.2 innings, which raises the practical cost of his absence as Seattle copes with other bullpen injuries.
- Team and reporters say the MRI results will likely determine whether Brash can pitch again in 2026 and an adverse finding could effectively end his season and leave the Mariners operating in a bullpen holding pattern during September.