Caleb Thielbar Re-Signs With the Chicago Cubs

Let’s be real for a second. When the Cubs signed Thielbar last winter after a rough 2024 season with the Twins, plenty of fans raised an eyebrow. He was 37. He looked done. It felt like a classic “throw something at the wall and see if it sticks” move.

Well, it stuck. Like pine tar.

Thielbar wasn’t just “okay” in 2025; he was lights out. We’re talking about a 2.64 ERA over 58 innings. He struck out 56 batters and only walked 13. In the high-stress environment of Wrigley Field, where the wind blows out, and leads disappear in a heartbeat, Thielbar was the guy Manager Craig Counsell could trust to put out fires.

His 1.1 bWAR might not look like MVP numbers, but for a middle reliever? That’s gold. He provided the kind of stability that keeps managers from losing their hair.

Dad Strength: How Thielbar Defies Father Time

Thielbar turns 39 in January. In professional sports years, that basically makes him a wizard. But instead of slowing down, he seems to be figuring things out.

There is something delightful about watching a veteran pitcher work. He doesn’t rely on a 102-mph fastball that blows out elbows. He relies on craftiness, location, and that specific “old man strength” that leaves young sluggers walking back to the dugout, wondering what just happened.

Last season, he absolutely owned the National League Central. If you take out one bad outing against the Cardinals, he allowed just one run across 15 appearances against division rivals. That is domination. That is how you win pennants.

Fitting Into the 2026 Bullpen Puzzle

The Cubs aren’t just bringing Thielbar back to be a mascot; they are building a specific identity in their bullpen. By pairing him with the recently signed Hoby Milner and Phil Maton, the front office is clearly prioritizing guys who throw strikes and get ground balls.

This is not a bullpen built on flash; it is built on efficiency. With an infield defense that boasted four Gold Glove finalists last year, you don’t need to strike everyone out. You just need to keep the ball on the ground and let your defense work.

Thielbar fits this mold perfectly. He is the veteran presence in a relief corps that looks increasingly like a “No Free Passes” zone.