Timeline
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Injured source of the outlook above
Right elbow inflammation
Status: Season ended early after doctors found degenerative changes in his right flexor mass.
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Moved to 60-day IL
Right elbow inflammation
Boston Red Sox transferred RHP Justin Slaten from the 15-day injured list to the 60-day injured list. Right elbow inflammation.
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Shut down setback
Elbow inflammation
Transferred onto the 60-day IL.
Manager Chad Tracy said earlier this month that the Sox expect him to miss the remainder of the season, so this move doesn’t come as a surprise.
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Moved to 60-day IL
Boston Red Sox transferred RHP Justin Slaten from the 15-day injured list to the 60-day injured list.
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Shut down setback
Right elbow inflammation
Evaluation revealed degenerative changes in his flexor mass and he will receive a platelet-rich plasma injection.
Reliever Slaten (elbow) expected to miss the rest of the season
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Shut down setback
Right elbow inflammation
Evaluation revealed degenerative changes in his flexor mass; treatment involves a platelet-rich plasma injection.
His throwing program was temporarily shut down after he continued to feel symptoms.
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Shut down setback
Right elbow inflammation
Diagnosed with degenerative changes in his flexor mass; receiving a platelet-rich plasma injection.
His throwing program was temporarily shut down after he continued to feel symptoms.
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Shut down setback
Elbow inflammation
Experienced a recurrence of symptoms after initially resuming throwing.
There’s currently no timetable for his return, but he’s been shut down for the time being.
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Shut down setback
Right elbow inflammation
Status: Still feeling some symptoms in his elbow, and his throwing program has been temporarily shut down.
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Throwing program
Right elbow inflammation
Hasn't progressed to mound work yet.
Is out to 120 feet playing catch.
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Throwing program
Right elbow inflammation
Played catch on Aug. 23 for first time since being shut down a week ago.
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Shut down
Right elbow inflammation
Evaluation revealed degenerative changes in his flexor mass; conservative course of action is a platelet-rich plasma injection.
His throwing program was temporarily shut down after he continued to feel symptoms.
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Placed on IL
Right elbow inflammation
Boston Red Sox placed RHP Justin Slaten on the 15-day injured list retroactive to August 13, 2026. Right elbow inflammation.
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Injured
Slaten spent time on the IL and only has 8 2/3 innings pitched on the year with a 4.15 ERA but a huge 32.4% strikeout rate.