The Cubs outrighted Cosgrove to Triple-A Iowa on Wednesday.

EDGE Analysis

He's no longer on the 40-man roster, but Cosgrove will remain in the organization after passing through waivers unclaimed. The lefty reliever has spent most of 2025 at Iowa, holding a 4.71 ERA, 1.60 WHIP and 51:25 K:BB over 42 innings.

The Cubs designated Cosgrove for assignment Sunday.

EDGE Analysis

Cosgrove will give up his spot on the 40-man roster to right-hander Aaron Civale, whom the Cubs claimed off waivers from the White Sox on Sunday. Before being optioned to Triple-A Iowa on Aug. 19, Cosgrove made two relief appearances for the Cubs this season, giving up one earned run on three hits and one walk over four innings. His results over a larger sample of 42 innings at Iowa were far less impressive (4.71 ERA, 1.60 WHIP, 51:25 K:BB), however, and the 29-year-old lefty could go unclaimed off waivers as a result.

The Cubs optioned Cosgrove to Triple-A Iowa on Tuesday.

EDGE Analysis

The left-hander was called up ahead of Game 1 of Tuesday's doubleheader and will return to the minors after noting appearing in the matinee. Cosgrove has made just two appearances in the majors this season and has a 4.66 ERA across 38.2 relief innings at Triple-A.

The Cubs recalled Cosgrove from Triple-A Iowa on Tuesday, Maddie Lee of the Chicago Sun-Times reports.

EDGE Analysis

Cosgrove will join the Cubs ahead of Tuesday's doubleheader with the Brewers, though it's unclear if he or another player will be sent back to Iowa once the twin bill concludes and Chicago needs to reduce its active roster to 26 men. The 29-year-old southpaw reliever has made just two appearances in the majors this season but has seen ample usage for Iowa, logging a 4.66 ERA and 1.65 WHIP while striking out 47 batters across 38.2 innings over 33 outings.

The Cubs optioned Cosgrove to Triple-A Iowa on Saturday, Taylor McGregor of Marquee Sports Network reports.

EDGE Analysis

Cosgrove was brought up from the minors Friday to replace Caleb Thielbar (paternity) but will now head back to Iowa to clear space on the active roster for Cade Horton. Cosgrove has given up just one run in four innings with the Cubs this season and is a candidate to return to Chicago later in the year whenever the big club needs a fresh bullpen arm.

The Cubs recalled Cosgrove from Triple-A Iowa on Friday, Maddie Lee of the Chicago Sun-Times reports.

EDGE Analysis

Cosgrove takes the roster spot of Caleb Thielbar, who was placed on the paternity list Friday. Cosgrove appeared in one game for the Cubs earlier this season, tossing two scoreless innings of relief, striking out a pair and walking one.

The Cubs optioned Cosgrove to Triple-A Iowa on Wednesday, Taylor McGregor of Marquee Sports Network reports.

EDGE Analysis

Cosgrove made one appearance during his brief time with the Cubs, tossing two scoreless innings. His roster spot is being absorbed by Chris Flexen.

The Cubs recalled Cosgrove from Triple-A Iowa on Sunday.

EDGE Analysis

Cosgrove started the season with the Padres but was traded to the Cubs on April 10. He tossed four scoreless innings in Triple-A while logging seven strikeouts, and he'll move to the majors to provide left-handed depth out of the Cubs' bullpen. Ethan Roberts was optioned to Iowa in a corresponding move.

Cosgrove was traded from the Padres to the Cubs on Thursday, Andy Martinez of Marquee Sports Network reports.

EDGE Analysis

Cosgrove was designated for assignment by the Padres on Sunday but will now offer the Cubs bullpen depth. He has pitched primarily in the minors throughout his career, though he has maintained a 3.95 ERA and 1.20 WHIP across 66 big-league frames.

The Padres designated Cosgrove for assignment Sunday.

EDGE Analysis

Cosgrove was pushed off the 40-man roster to make room for right-hander Logan Gillaspie, who had his contract selected from Triple-A El Paso prior to Sunday's game against the Cubs. After turning in a 11.66 ERA and 1.98 WHIP over 14.2 regular-season innings at the big-league level in 2024, Cosgrove didn't make much of a claim for a spot in the Padres' Opening Day bullpen this spring and struggled over his first four relief outings with El Paso, giving up three earned runs on four hits and four walks over 3.2 innings.