The White Sox designated Rolison for assignment Tuesday.

EDGE Analysis

The transaction frees up a spot on the 40-man roster for Sean Newcomb, who was signed Tuesday. Rolison was a waiver claim of the White Sox earlier this month and will now be up for grabs on waivers again. He held a 7.02 ERA and 25:20 K:BB over 42.1 innings with the Rockies in 2025.

The White Sox claimed Rolison off waivers from Atlanta on Friday.

EDGE Analysis

Atlanta had 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.

Atlanta designated Rolison for assignment Thursday.

EDGE Analysis

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.

Atlanta acquired Rolison from the Rockies on Wednesday in exchange for cash considerations.

EDGE Analysis

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.

The Rockies designated Rolison for assignment Tuesday, Patrick Saunders of The Denver Post reports.

EDGE Analysis

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.

The Rockies optioned Rolison to Triple-A Albuquerque on Wednesday.

EDGE Analysis

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 Dolphins 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.

The Rockies recalled Rolison from Triple-A Albuquerque on Thursday.

EDGE Analysis

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.

The Rockies optioned Rolison to Triple-A Albuquerque on Wednesday.

EDGE Analysis

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.

The Rockies recalled Rolison from Triple-A Albuquerque on Monday.

EDGE Analysis

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.

The Rockies optioned Rolison to Triple-A Albuquerque on Sunday.

EDGE Analysis

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.