The Cubs re-signed Thielbar to a one-year contract Tuesday, Jesse Rogers of ESPN.com reports.

EDGE Analysis

Thielbar collected a 2.64 ERA and 56:13 K:BB over 58 regular-season innings for the Cubs in 2025. Left-handed batters hit just .161/.211/.276 off the southpaw. Thielbar -- who will turn 39 in January -- will help set up from the left side in the Cubs' bullpen.

Thielbar tossed a scoreless inning of relief with a strikeout to record a hold in Tuesday's 4-3 win over Atlanta.

EDGE Analysis

Thielbar is now up to 19 holds for the year, which is good for second on the team behind Brad Keller's 22. The veteran lefty has been locked in lately, as he's recorded nine straight scoreless appearances. Overall, Thielbar has an elite 1.99 ERA and 0.83 WHIP to go along with 48 strikeouts in 49.2 innings out of the bullpen this season, his first with the Cubs.

Thielbar, who tossed 1.1 scoreless innings of relief with two strikeouts in Wednesday's win over the Brewers, has 13 scoreless appearances across his last 14 outings.

EDGE Analysis

The only blemish in the stretch of scoreless outings for Thielbar was his appearance on Aug. 3 when he allowed a game-winning, two-run home run to Baltimore. The veteran southpaw has been outstanding all season for the Cubs, as he now has a 2.12 ERA across 46.2 innings, and he's struck out 46 batters. Thielbar has been particularly tough against fellow lefties, limiting them to just a .114 batting average this year.

Thielbar (2-3) allowed two runs on two hits and a walk while retiring only two batters to take the loss in Saturday's 4-3 defeat to the Orioles.

EDGE Analysis

After seven scoreless innings from starter Matthew Boyd, relievers Ryan Brasier and Thielbar coughed up the lead in the eighth. The key play was a three-run home run by Gunnar Henderson off Thielbar, which saddled the veteran lefty with the loss. Thielbar still has a strong 2.36 ERA and 0.86 WHIP across 42 innings this season, and he should remain a key piece of Chicago's bullpen despite the hiccup.

Thielbar tossed a scoreless inning of relief with two strikeouts to earn a hold in Friday's 4-1 win over the Red Sox.

EDGE Analysis

After allowing two runs in his last appearance before the All-Star break, Thielbar got back into a groove Friday. The veteran lefty has been scored upon only six times in 41 outings this season, leaving him with a solid 2.23 ERA to go along with 10 holds and two wins out of Chicago's bullpen. After posting a 5.32 ERA last year for Minnesota, Thielbar has bounced back in his first year with the Cubs, working as an effective bridge to closer Daniel Palencia, who earned his 13th save of the season Friday.

Thielbar, who retired two batters in Monday's 3-1 win over the Rockies without allowing a run to record a hold, now has a 2.37 ERA and 1.00 WHIP through 22 appearances this season.

EDGE Analysis

Thielbar has pitched well in his first year with the Cubs, and he's now gone eight straight appearances without allowing a run. The veteran lefty struggled last season in Minnesota, posting a 5.32 ERA and 1.56 WHIP across 59 games, but his 2025 figures are closer to his career marks of a 3.32 ERA and 1.18 WHIP. Thielbar should remain a key member of Chicago's bullpen, particularly due to his success against left-handed hitters. Batters from the same side are only hitting .071 against Thielbar this year.

The Cubs reinstated Thielbar (personal) from the paternity list Monday, Jared Wyllys of AllCHGO.com reports.

EDGE Analysis

Thielbar was away from the Cubs for the maximum three games while he welcomed a new addition to his family. Chicago optioned righty Gavin Hollowell to Triple-A Iowa to clear a spot on the 26-man active roster and in the bullpen for Thielbar.

The Cubs placed Thielbar on the paternity list Friday, Maddie Lee of the Chicago Sun-Times reports.

EDGE Analysis

Thielbar's wife gave birth Friday, and the left-handed reliever could miss the weekend series against the Mets. In a corresponding move, the Cubs recalled Tom Cosgrove from Triple-A Iowa.

Thielbar (1-0) tossed two scoreless innings of relief with a strikeout to earn the win in Saturday's 6-2 victory over the Diamondbacks.

EDGE Analysis

Thielbar worked the fifth and sixth innings after starter Ben Brown covered the first four frames. That set the lefty reliever up for his first win in a Chicago uniform. Thielbar allowed two runs in his third appearance of the year, but since then, the veteran reliever has only allowed two total runs across 6.1 innings in seven appearances. His fantasy upside is limited, however, as a middle-relief option for the Cubs.

The Cubs signed Thielbar to a one-year contract Tuesday, Jesse Rogers of ESPN.com reports.

EDGE Analysis

Thielbar will turn 38 in January and had a down 2024 season, posting a 5.32 ERA, 1.56 WHIP and 53:24 K:BB over 47.1 innings. However, he boasted a 30.6 percent strikeout rate and 7.0 percent walk rate from 2021 to 2023, so the left-handed reliever seems like a fine gamble on a one-year deal.