The Detroit Tigers have made a move to bolster their bullpen following a demanding weekend series. In an official announcement on Monday, the team confirmed that right-handed pitcher Keider Montero has been recalled from the Triple-A Toledo Mud Hens.
To make room on the 26-man roster, left-handed pitcher Bailey Horn has been reassigned to Toledo.
While it’s a standard transaction on the surface, this move tells a bigger story about the current state of the Tigers’ pitching staff and the strategic maneuvering required to navigate the grind of a long MLB season. Let’s dive into what this means for the team.
Why the Move? It’s All About a Fresh, Long Arm
The primary reason for the shuffle comes down to one thing: bullpen usage. The Tigers are fresh off an 11-inning marathon against the Toronto Blue Jays, a game that heavily taxed their relief corps. When a game goes that deep, a manager’s immediate concern is having enough fresh arms for the next few games.

Manager A.J. Hinch laid out the logic perfectly.
“We needed some length,” Hinch explained. “Yesterday’s game took a toll. Keider has been stretched out as a starter in Toledo, so he gives us some coverage and a fresh arm that can go multiple innings if we need it.”
That “length” is the critical factor here. Montero, who has been working as a starting pitcher for the Mud Hens, is capable of throwing multiple innings in a single appearance. This is invaluable for a manager looking to prevent a domino effect of overworking his entire bullpen. Montero can act as a bridge, saving other key relievers for higher-leverage situations.
A Closer Look at Keider Montero
This marks Montero’s second time with the big-league club this season, and he’s returning to Detroit with momentum.
In his most recent start in Triple-A, Montero was dominant. He pitched five strong innings, allowing just one run on three hits and two walks while racking up an impressive seven strikeouts. That’s the kind of performance that earns you a call-up.
Fans may recall his solid, albeit brief, appearance for the Tigers earlier this season. In that outing, he tossed three innings of relief, surrendering just one run on a single hit. While he did issue three walks, he also punched out two batters, proving he has the stuff to compete at this level. Now, he gets another opportunity to solidify his role and provide a much-needed boost.
The Tough Side of the Business for Bailey Horn
On the other side of this transaction is Bailey Horn, who finds himself heading back to Toledo despite a strong performance. In that same 11-inning game, Horn came in and delivered 1⅓ scoreless innings, doing his job effectively.
This reassignment is not an indictment of Horn’s pitching. It’s a classic example of a “roster crunch.” The team had a specific need—a multi-inning reliever—and Montero’s role as a starter in the minors made him the perfect fit for that immediate need. Horn remains a valuable depth piece and will almost certainly be back in a Tigers uniform later this season.
What to Expect Next
Keider Montero will be available immediately and should be slotted into a long-relief role. Expect to see him deployed when the Tigers need to cover multiple innings in the middle of a game, whether they are ahead or behind.
This is a smart, strategic move by the Tigers’ front office to protect its most valuable asset: its pitching staff. For now, all eyes are on Montero as he gets another chance to make his mark in the Motor City.