Timeline
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Injured source of the outlook above
Right lat strain
Also, Matt Brash (right lat strain) recently received a platelet-rich plasma injection while recovering in Arizona.
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Shut down
Right lat strain
Recently received a platelet-rich plasma injection while recovering in Arizona.
He will be down from his normal offseason program until roughly eight weeks after the season ends.
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Shut down setback
Right lat strain
MRI showed more inflammation in that area, though he has no structural damage.
The Mariners have shut down reliever Matt Brash, per Ryan Divish of The Seattle Times.
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Threw a bullpen setback
Right lat strain
Brash was due to undergo an MRI after experiencing tightness after his throwing sessions.
So, 19 days after his first bullpen session in Houston, Brash was due to undergo another MRI to determine what all is going on.
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Threw a bullpen setback
Grade 1 right lat strain
Has felt good while throwing, but is dealing with tightness after, which has kept him from progressing past bullpens to live batting practice.
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Threw a bullpen setback
Right lat strain
Brash was due to undergo an MRI after experiencing tightness following throwing sessions.
So, 19 days after his first bullpen session in Houston, Brash was due to undergo another MRI to determine what all is going on.
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Shut down
Grade 1 right lat strain
Sept. 3 MRI showed continued inflammation in lat.
Will be shut down at least eight weeks, ending his season.
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Threw a bullpen
Grade 1 right lat strain
Transferred to 60-day IL on Aug. 21
Threw another bullpen on Aug. 29 in Toronto of about 15-20 pitches, with another scheduled during upcoming series in Boston.
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Threw a bullpen
Right lat strain
Matt Brash (right lat strain) was slated for his fourth bullpen session of his progression on Monday.
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Threw a bullpen
Grade 1 right lat strain
Transferred to 60-day IL on Aug. 21
Threw fourth off-the-mound bullpen session Aug. 24 at T-Mobile Park, with timeline to return still to be determined.
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Moved to 60-day IL
Right lat strain
Seattle Mariners transferred RHP Matt Brash from the 15-day injured list to the 60-day injured list. Right lat strain.
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Placed on IL
Right lat strain
Seattle Mariners placed RHP Matt Brash on the 15-day injured list retroactive to June 9, 2026. Right lat strain.