Detroit Tigers pitcher Justin Verlander has been placed on the 15-day injured list with left hip inflammation.

Keider Montero will be called up and is expected to start Sunday, April 5, against the St. Louis Cardinals at Comerica Park.

It will be retroactive to April 1, so the earliest Verlander will be eligible to return is April 16.

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Verlander has already pitched once this season, although his first start was forgettable. He gave up five runs off six hits in 3⅔ innings against the Arizona Diamondbacks. He struggled with his command, throwing 80 pitches (53 for strikes) while recording one strikeout with two walks. Since then, he has worked on his mechanics.

“Head position,” he said Saturday. “Trying to be a little more deceptive and stay in line a little bit longer.”

The Diamondbacks hit Verlander hard, making contact with seven balls that featured an exit velocity over 100 mph.

“It wasn’t good enough,” Verlander said. “I hope it’s not like last year … months trying to find it. Hopefully I find it a little quicker than that. But yeah, you know, I think talking to analysts and those guys and the stuff is actually pretty good, so not too far away. I hope.”

Verlander, 43, signed a one-year deal with the Tigers this offseason, returning to the franchise he spent his first 13 seasons with. He made 29 starts in 2025 for the San Francisco Giants.

And he was expected to start Sunday night against the Cardinals in Comerica Park in front of a national audience on “Sunday Night Baseball” on Peacock, NBC’s streaming service.

Montero was optioned to Triple-A by the Tigers on March 4, with the franchise planning on him as their No. 6 starter in the rotation.

“We’ve got to protect our rotation,” Hinch said when Montero was sent to Toledo. “For him, defining the role where we felt like he can help us the most was going to be, at some point, in our rotation. Whether that’s getting called up as a sixth starter, or god forbid anything happens, he’s equipped to handle that, and the only way to do that is get him going and building him as a starter.”

In 2025, Montero registered a 4.37 ERA with 31 walks and 72 strikeouts across 90⅔ innings in 20 games (12 starts) for the Tigers. He also logged a 5.91 ERA across 42⅔ innings in 10 games (eight starts) for Triple-A Toledo.

Montero has made one start for Toledo, throwing four scoreless innings against the Lehigh Valley IronPigs on March 29. He struck out three with one walk.

Contact Jeff Seidel: jseidel@freepress.com. Follow him on X @seideljeff