The White Sox claimed Rolison off waivers from Atlanta on Friday.
Atlanta designated Rolison for assignment Thursday and he's quickly been scooped up off waivers. The lefty held a 7.02 ERA and 25:20 K:BB over 42.1 innings with the Rockies in 2025. Rolison will compete for a role in the Opening Day bullpen, but he has minor-league options remaining so the White Sox could send him to Triple-A Charlotte if he doesn't make the club.
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Braves' Ryan Rolison: Removed from 40-man roster
Rotowire
Atlanta designated Rolison for assignment Thursday.
The transaction frees up a spot on the 40-man roster for the addition of Robert Suarez, who was signed to a three-year deal. Rolison was just acquired from Colorado for cash considerations last month after he had been removed from the Rockies' 40-man roster. He posted a 7.02 ERA and 25:20 K:BB over 42.1 innings in 2025.
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Braves' Ryan Rolison: Shipped to Atlanta
Rotowire
Atlanta acquired Rolison from the Rockies on Wednesday in exchange for cash considerations.
Rolison had been removed from the Rockies' 40-man roster Tuesday and is now headed to a new organization. The left-hander held an ugly 7.02 ERA and 25:20 K:BB over 42.1 innings for Colorado in 2025, but Atlanta believes it can coax better results out of the 2018 first-round pick.
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Rockies' Ryan Rolison: Removed from 40-man roster
Rotowire
The Rockies designated Rolison for assignment Tuesday, Patrick Saunders of The Denver Post reports.
Rolison was a first-round pick (22nd overall) in the 2018 First-Year Player Draft, but he hasn't been able to perform to that pedigree. The lefty had been buried in the minors until last season, when he got into 31 games with Colorado and pitched to an ugly 7.02 ERA and 1.77 WHIP over 42.1 innings. Rolison's 25:20 K:BB paints a pretty clear picture of how much he struggled to get big-league batters out, and the Rockies now appear set to move on.
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Rockies' Ryan Rolison: Optioned to Triple-A
Rotowire
The Rockies optioned Rolison to Triple-A Albuquerque on Wednesday.
Rolison made four appearances out of the Rockies' bullpen since being recalled from Triple-A on Sept. 11, but in his last outing against the Marlins this past Thursday he allowed two runs on two hits while striking out one batter in one inning. He'll return to Albuquerque, where he sports a 3.34 ERA, 1.14 WHIP and 32:9 K:BB across 29.2 innings this season.
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Rockies' Ryan Rolison: Returns to Colorado
Rotowire
The Rockies recalled Rolison from Triple-A Albuquerque on Thursday.
The Rockies sent Rolison down to the minors Sept. 3, but he'll now return to the big leagues to replace Luis Peralta, who landed on the injured list Thursday with a hip injury. The 28-year-old Rolison carries a 7.15 ERA and 1.82 WHIP through 39 frames in the bigs this season and isn't likely to pitch in high-leverage situations anytime soon.
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Rockies' Ryan Rolison: Sent back to Triple-A
Rotowire
The Rockies optioned Rolison to Triple-A Albuquerque on Wednesday.
Rolison was recalled from Albuquerque on Monday when the Rockies' active roster expanded from 26 to 28 men, but he'll end up heading back to the minors just two days later after Colorado needed to make room for waiver-wire pickup Roansy Contreras. The left-handed Rolison has made 27 appearances (one start) for Colorado this season, logging a 7.15 ERA and 1.82 WHIP over 39 innings.
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Rockies' Ryan Rolison: Rejoins big club
Rotowire
The Rockies recalled Rolison from Triple-A Albuquerque on Monday.
Rolison will provide the Rockies with another relief arm in September. The lefty has a 7.41 ERA, 1.81 WHIP and 21:18 K:BB over 37.2 innings with Colorado this season.
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Rockies' Ryan Rolison: Returns to minors
Rotowire
The Rockies optioned Rolison to Triple-A Albuquerque on Sunday.
Rolison pitched a scoreless frame in Saturday's 10-7 win over Arizona but will still end up losing his spot on the 26-man active roster. The left-hander has a 7.41 ERA, 1.81 WHIP and 21:18 K:BB over 37.2 innings with Colorado this season.
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Rockies' Ryan Rolison: Called up by big club
Rotowire
The Rockies recalled Rolison from Triple-A Albuquerque on Saturday.
Rolison will take the spot on the 26-man roster vacated by Antonio Senzatela (finger), who was placed on the 15-day injured list in a corresponding move. Rolison has a 3.22 ERA and 1.49 WHIP in Triple-A this season, but that success hasn't translated to the majors, where he has a 7.34 ERA, 1.76 WHIP and 18:15 K:BB across 30.2 innings.
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Rockies' Ryan Rolison: Demoted after rough appearance
Rotowire
The Rockies optioned Rolison to Triple-A Albuquerque on Sunday.
After yielding two runs (one earned) over 1.2 innings in a 33-pitch relief appearance Saturday, Rolison was unlikely to be available for the next day or two. As a result, the Rockies opted to swap him off the 26-man roster in favor of a fresh bullpen arm in Angel Chivilli.
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Rockies' Ryan Rolison: Working as opener Friday
Rotowire
Rolison will open Friday's game against the Mets, Thomas Harding of MLB.com reports.
Rolison will make his first big-league start Friday, but he'll likely only pitch an inning or two before handing the ball off to Antonio Senzatela. In seven appearances this season, Rolison has a 4.50 ERA spanning 10 innings.
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Rockies' Ryan Rolison: Strong start to big-league career
Rotowire
Rolison threw 2.1 scoreless innings while allowing one hit Sunday against the Diamondbacks.
Rolison was called up May 11 to make his big-league debut and has since made three appearances out of the bullpen. He has only one strikeout across four innings, though he also has yet to allow an earned run. Rolison is pitching multiple innings in low-leverage spots, and he has the potential to be stretched out as a starter at some point this season.
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Rockies' Ryan Rolison: Receives call-up
Rotowire
The Rockies selected Rolison's contract from Triple-A Albuquerque on Sunday.
Rolison will be making his MLB debut when he gets into a game. He was previously a member of the Rockies' 40-man roster during the 2022 and 2023 seasons, but his standing in the organization fell after he struggled to bounce back from June 2022 shoulder surgery. Though Colorado initially developed him as a starter, Rolison made the full-time transition to relief in 2024 and has found some success. Over 12 appearances in the hitter-friendly Pacific Coast League this season, Rolison has delivered a 3.72 ERA, 1.73 WHIP and 23:7 K:BB over 19.1 innings.
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Rockies' Ryan Rolison: Looks healthy for spring
Rotowire
Rolison (undisclosed) was spotted throwing off flat ground at Rockies camp Wednesday, Patrick Lyons of TheDNVR.com reports.
Rolison didn't pitch after June 2 last season due to an unspecified injury, with the extended absence once again costing the 26-year-old some meaningful development time after his entire 2022 season was wiped out by shoulder surgery. Though Rolison looks to be healthy entering camp, he was moved off the 40-man roster in the offseason and will likely need to pitch well for an extended period at Triple-A Albuquerque before he gets the chance to make his MLB debut.
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Rockies' Ryan Rolison: Outrighted to Albuquerque
Rotowire
The Rockies sent Rolison (undisclosed) outright to Triple-A Albuquerque on Friday.
Rolison missed nearly all of last season due to injury, pitching just five innings with Albuquerque across two starts and giving up seven runs in the process. The 26-year-old southpaw hasn't pitched a full season since 2021, and he'll likely need to improve upon his 6.57 ERA at Triple-A before reclaiming a spot on Colorado's 40-man roster.
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Rockies' Ryan Rolison: Moved to 60-day IL
Rotowire
Rolison (undisclosed) was transferred to the 60-day injured list Friday.
Rolison has been on the injured list in Triple-A since June 4 and now finds himself on the 60-day IL for the second time this season. The move will keep him out of action in the minors through the beginning of August and opens a 40-man spot for Tommy Doyle, who was selected from Albuquerque on Friday.
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Rockies' Ryan Rolison: Back on injured list
Rotowire
Rolison has been on the 7-day injured list at Triple-A Albuquerque since June 4 due to an unspecified issue.
While recovering from shoulder surgery he underwent last summer, Rolison opened the season on the Rockies' 60-day IL and didn't begin a rehab assignment in the minors until mid-May. He was ultimately optioned to Albuquerque after being reinstated from the IL, but he made just four total appearances for the Triple-A affiliate before landing back on the shelf. It's unclear if Rolison suffered a setback with his surgically repaired shoulder or if he's dealing with an unrelated issue.
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Rockies' Ryan Rolison: Activated, sent to Triple-A
Rotowire
The Rockies reinstated Rolison (shoulder) from the 60-day injured list and optioned him to Triple-A Albuquerque on Monday.
Though Rolison still had time left in his 30-day rehab window, the southpaw didn't have a spot in the big-league rotation waiting for him, so the Rockies opted to activate him early. He'll now continue to make regular starts out of the Albuquerque rotation and work to hone his command and control after missing the entire 2022 season while recovering from surgery to repair the labrum of his left shoulder. Over his first three rehab outings between Albuquerque and Single-A Fresno, Rolison allowed nine runs on 12 hits and six walks while striking out nine in 10 innings.
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Rockies' Ryan Rolison: Starts up rehab assignment
Rotowire
Rolison (shoulder) began a rehab assignment with Single-A Fresno on Tuesday and tossed three scoreless innings, striking out three while allowing two hits and one walk.
Rolison missed the entire 2022 season and eventually underwent surgery last June to repair the labrum in his left shoulder, but he looks to be just a few weeks away from returning from the 60-day injured list. Heading into the season, the Rockies may have initially been planning to option Rolison to Triple-A Albuquerque at the conclusion of his 30-day rehab window, but long-term elbow injuries to German Marquez and Antonio Senzatela have already tested the organization's thin pitching depth. If Rolison continues to fare reasonably well when he eventually moves his rehab assignment to higher-level affiliate, he could have a spot in the big-league rotation waiting for him once he's activated.
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