The Rays signed Booser to a minor-league contract Monday.
Booser was non-tendered by the White Sox earlier this offseason after finishing with a 5.52 ERA, 1.52 WHIP and 35:19 K:BB over 31 innings during the 2025 campaign. The Rays will retain control of the lefty reliever through the 2030 season.
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Cam Booser: Non-tendered by CWS
Rotowire
The White Sox did not tender Booser a contract for 2026 on Friday.
Booser was acquired from the Red Sox last winter and made 39 appearances for the White Sox in 2025, finishing with a 5.52 ERA, 1.52 WHIP and 35:19 K:BB over 31 innings.
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White Sox's Cam Booser: Rejoins big-league bullpen
Rotowire
The White Sox recalled Booser from Triple-A Charlotte on Friday.
Booser has bounced between Charlotte and Chicago multiple times this season, holding a 4.82 ERA, 1.46 WHIP and 33:18 K:BB over 28 frames in the majors. He'll give manager Will Venable another lefty in the bullpen.
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White Sox's Cam Booser: Sent to Triple-A
Rotowire
The White Sox optioned Booser to Triple-A Charlotte on Tuesday.
The left-hander was called up by Chicago last week and will return to Charlotte after giving up two runs in two innings over three appearances. Booser has an underwhelming 4.82 ERA, 1.46 WHIP and 33:18 K:BB over 28 frames in the majors this year.
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White Sox's Cam Booser: Recalled from Charlotte
Rotowire
The White Sox recalled Booser from Triple-A Charlotte on Thursday.
Before beginning a four-game set against the Yankees, the White Sox will add a fresh arm to their bullpen in the form of Booser. The 33-year-old southpaw owns a 4.85 ERA and 1.35 WHIP through 26 innings in the majors this year and will likely work in middle relief while in Chicago. Tyler Gilbert was optioned to Triple-A in a corresponding move.
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White Sox's Cam Booser: Heading back to Charlotte
Rotowire
The White Sox optioned Booser to Triple-A Charlotte on Wednesday.
Booser made a pair of scoreless appearances during his most recent stint in the big leagues, but he will nonetheless be dispatched back to the minors. The lefty reliever holds a 4.85 ERA and 29:14 K:BB over 26 innings this season.
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White Sox's Cam Booser: Moves up from Triple-A
Rotowire
The White Sox recalled Booser from Triple-A Charlotte on Sunday.
Chicago summoned Booser and Elvis Peguero from Charlotte to provide fresh bullpen arms in place of Bryan Hudson and Wikelman Gonzalez. Over 24.2 innings in the majors this season, Booser has posted a 5.11 ERA, 1.42 WHIP and 27:14 K:BB.
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White Sox's Cam Booser: Notches first save
Rotowire
Booser threw a perfect ninth inning to earn a save against Miami on Sunday.
Booser needed only six pitches (five strikes) to retire the Marlins' 8-9-1 hitters in Sunday's win. It was his first save of the season after picking up his first win of the year Friday against Miami. He now owns a 4.80 ERA with a 15:8 K:B across 15 innings. Two of Booser's last three appearances have been save opportunities, and the White Sox's closer role still appears to be very fluid.
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Red Sox's Cam Booser: Back from injured list
Rotowire
The Red Sox activated Booser (elbow) from the 15-day injured list Wednesday. Mac Cerullo of the Boston Herald reports.
The left-hander landed on the shelf due to elbow inflammation in mid-August and is ready to rejoin the active roster after two scoreless rehab appearances. Booser has been effective out of the bullpen during his rookie campaign with a 3.00 ERA, 1.24 WHIP and 42:13 K:BB over 42 innings.
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Red Sox's Cam Booser: Restarts rehab assignment
Rotowire
Booser (elbow) struck out a batter and gave up one hit in a scoreless inning in his rehab appearance Saturday with Double-A Portland.
Booser began his rehab assignment Aug. 29 with Triple-A Worcester, but he took a one-week break before making his return to game action this weekend, albeit at a different affiliate. The left-hander looked sharp Saturday and may require just one or two more appearances in the minors before returning from the 15-day injured list.
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Red Sox's Cam Booser: Goes on IL with elbow injury
Rotowire
The Red Sox placed Booser on the 15-day injured list Wednesday with left elbow inflammation, Ian Browne of MLB.com reports.
Booser failed to retire any of the three batters he faced in Tuesday's win over the Rangers, but it appears his elbow might have been bothering him in the outing. It's not clear at this point how much time he might miss. Brennan Bernardino was called up from Triple-A Worcester to replace Booser in the bullpen.
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Red Sox's Cam Booser: Recalled from Triple-A
Rotowire
The Red Sox recalled Booser from Triple-A Worcester on Friday, Alex Speier of The Boston Globe reports.
Booser was just sent down Wednesday but is back to take the roster spot of Brayan Bello, who went on paternity leave. Booser, a lefty reliever, holds a 2.77 ERA and 1.13 WHIP in 38 appearances with the Red Sox this season.
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Red Sox's Cam Booser: Sent back to minors
Rotowire
The Red Sox optioned Booser to Triple-A Worcester on Monday, Chris Henrique of Beyond the Monster reports.
This transaction looks to be entirely due to Booser having minor-league options available and having pitched each of the last three days, as he likely wasn't going to be available for at least a day or two. Booser should be back with the big club soon.
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Red Sox's Cam Booser: To be promoted Friday
Rotowire
The Red Sox will promote Booser from Triple-A Worcester on Friday, Ian Browne of MLB.com reports.
Booser has struck out 15 batters and walked just one while posting a 2.70 ERA and 0.65 WHIP across 6.2 innings at Triple-A this season. The 31-year-old southpaw will provide depth to a badly injured Red Sox pitching staff and will be making his MLB debut once he gets into a game.
