Sweet signed a minor-league contract with the Red Sox on Dec. 18.
The 29-year-old right-handed reliever previously saw action in the big leagues during the 2023 season, when he made seven total appearances between the Mariners and Athletics. He pitched exclusively at Triple-A Lehigh Valley in the Phillies organization in 2025, logging a 5.47 ERA, 1.49 WHIP and 50:30 K:BB over 52.2 innings.
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Phillies' Devin Sweet: Clears waivers
Rotowire
The Phillies outrighted Sweet to Triple-A Lehigh Valley on Sunday.
Sweet no longer possesses a spot on the Phillies' 40-man roster, but he'll remain in the organization after clearing waivers. The 28-year-old right-handed reliever has spent the entire 2025 season with Lehigh Valley, logging a 5.50 ERA, 1.51 WHIP and 35:19 K:BB in 37.2 innings.
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Phillies' Devin Sweet: Cut loose by Phillies
Rotowire
The Phillies designated Sweet for assignment Thursday.
Sweet was let go from Philadelphia's 40-man roster to create room for Matt Manning. Sweet has only seven games logged in the majors, which all came during in the 2023 season for the Athletics and Mariners. With Triple-A Lehigh in 2025, the 28-year-old has a 5.50 ERA over 37.2 innings.
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Phillies' Devin Sweet: Fails to make Opening Day roster
Rotowire
The Phillies optioned Sweet to Triple-A Lehigh Valley on Wednesday, Lochlahn March of The Philadelphia Inquirer reports.
Sweet -- who was acquired via trade over the offseason -- yielded three runs with a 5:3 K:BB in six innings this spring. The 28-year-old will provide bullpen depth at Lehigh Valley.
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Tigers' Devin Sweet: Outrighted to Triple-A
Rotowire
Sweet cleared waivers and was outrighted to Triple-A Toledo by the Tigers on Monday.
He's no longer on the 40-man roster but will remain in the organization. Sweet held a 10.38 ERA in seven major-league appearances in 2023 but collected a 2.25 ERA and 57:11 K:BB over 44 innings between the Double- and Triple-A levels.
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Tigers' Devin Sweet: Loses 40-man roster spot
Rotowire
The Tigers designated Sweet for assignment Monday, Evan Petzold of the Detroit Free Press reports.
He'll cede his spot on the 40-man roster to infield prospect Colt Keith, who signed a six-year extension with Detroit over the weekend. Sweet has already been in three different organizations this offseason, and he'll now go through the waiver process once again. The reliever held a 10.38 ERA in seven appearances this past season with Oakland and Seattle in what was his first taste of the majors.
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Tigers' Devin Sweet: Goes to Tigers via waivers
Rotowire
The Tigers claimed Sweet off waivers from the Giants on Thursday.
Sweet has done some bouncing around since last August, going from the Mariners to the Athletics to the Giants and now to the Tigers via waivers. The 27-year-old reliever held a 10.38 ERA in seven appearances during 2023 in his first taste of the majors, but he posted a 2.25 ERA and 57:11 K:BB over 44 frames in the minors last season. He'll look to fill a middle relief role in Detroit.
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Giants' Devin Sweet: Claimed by San Francisco
Rotowire
Sweet was claimed off waivers by the Giants on Monday, Susan Slusser of the San Francisco Chronicle reports.
A 27-year-old reliever, Sweet walked as many as he struck out (six) while allowing 10 earned runs over 8.2 innings in the majors, split between stints with the Mariners and Athletics. He primarily pitched with Seattle's Double-A affiliate, logging a 1.54 ERA, 0.91 WHIP and 47 strikeouts in 35 innings during that assignment. Sweet has minor-league options remaining.
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Athletics' Devin Sweet: Recalled from Triple-A
Rotowire
Sweet was recalled from Triple-A Las Vegas on Wednesday.
Sweet was claimed off waivers from the Mariners over the weekend and is now poised to make his Athletics debut. The 26-year-old reliever has yielded two runs in two innings over two appearances in the majors this season but boasts a 2.30 ERA and 56:11 K:BB across 43 frames this year in the minors.
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Mariners' Devin Sweet: Joins team in Chicago
Rotowire
Sweet has joined the Mariners in Chicago and could be recalled prior to the start of their series versus the White Sox, Ryan Divish of The Seattle Times reports.
The Mariners' bullpen is in need of reinforcements after Emerson Hancock lasted just two innings Sunday in Houston before exiting with a shoulder injury. Darren McCaughan has also joined the M's in Chicago and at least one of he or Sweet will be added to the roster as Hancock's replacement.
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Mariners' Devin Sweet: Selected to roster
Rotowire
The Mariners purchased Sweet's contract from Double-A Arkansas on Wednesday, Ryan Divish of The Seattle Times reports.
Sweet earned the promotion after collecting a 1.54 ERA and 47:8 K:BB over 35 innings at Arkansas. The 26-year-old will be making his major-league debut when he gets into a game.
