Tigers Notes: Montero, Rotation, Lee
The Tigers optioned right-hander Keider Montero to Triple-A Toledo on Wednesday afternoon. That takes him out of consideration for the Opening Day roster.
It’s a moderate surprise that Montero was demoted this early in camp. The 25-year-old finished last season on the MLB roster and added 5 1/3 innings without allowing an earned run over three playoff appearances. Detroit’s offseason additions of Framber Valdez, Justin Verlander and Drew Anderson left him without a path to a season-opening rotation job.
Rather than keeping Montero in the mix for a swing role, they’ll have him stay stretched out in Triple-A. Montero is away from the team pitching for his native Venezuela in the World Baseball Classic. Manager A.J. Hinch told reporters (including Cody Stavenhagen of The Athletic) that the plan is for Montero to make one or two bulk appearances in the tournament. He’ll continue to build to a starting workload with Toledo after that.
Detroit has a front five of Tarik Skubal, Valdez, Verlander, Jack Flaherty and Casey Mize. Anderson is out of options and needs to be on the MLB roster. He’ll start the season in long relief assuming no injuries for the rest of camp. He’d presumably step into the rotation if anyone gets hurt.
Montero, who turned in a 4.37 ERA across 90 2/3 innings a year ago, is seventh on the rotation depth chart with Troy Melton likely to open the season on the injured list. He has one minor league option year remaining. Assuming he spends at least 20 days in the minors over the course of the regular season, he’d be out of options going into 2027.
While Montero will be playing in the WBC, another Detroit player has pulled out of the tournament due to injury. Chinese Taipei announced that second/third base prospect Hao-Yu Lee strained his left oblique (relayed by Evan Woodbery of MLive). He had been with the Taiwanese team in Tokyo for pool play but is headed back to the Tigers’ spring complex for evaluation.
The 23-year-old Lee spent all of last season in Toledo. He hit 14 homers with a .243/.342/.406 batting line across 579 trips to the plate. Lee, whom Baseball America ranked as the #6 prospect in the organization over the winter, was added to the 40-man roster in November.
Lee wasn’t likely to receive consideration for the Opening Day roster, but the injury is a small hit to Detroit’s infield depth. Even less severe oblique strains typically require multiple weeks, meaning he’s probably headed for the minor league injured list to begin the season. Meanwhile, Chinese Taipei was blanked 3-0 by Australia in the first game of the WBC tonight.
Tigers Designate Six Relievers For Assignment
The Tigers designated six relief pitchers for assignment: Dugan Darnell, Jack Little, Sean Guenther, Jason Foley, Tanner Rainey and Tyler Mattison. They added five prospects to the roster to keep them out of the Rule 5 draft: Hao-Yu Lee, Thayron Liranzo, Trei Cruz, Eduardo Valencia and Jake Miller. The sixth roster spot is filled by Gleyber Torres, who officially accepted the qualifying offer.
Liranzo, 22, isn’t too far removed from being one of the better catching prospects in the game. The Tigers landed him alongside Trey Sweeney in the 2024 deadline deal that sent Jack Flaherty to Los Angeles. He’d posted a .378 on-base percentage that season but dropped to a .206/.308/.351 slash line in 88 games with Double-A Erie this year. The Tigers weren’t going to jump ship after one bad year, but he may need to repeat Double-A.
Lee, a 22-year-old infielder out of Taiwan, came over from Philadelphia in the 2023 Michael Lorenzen deadline trade. He spent the entire season at Triple-A Toledo, where he hit .243/.342/.406 across 579 trips to the dish. He walked at a strong 11.2% clip while striking out 21% of the time. Lee can’t play shortstop and isn’t going to have a path to second base playing time behind Torres. His best chance of carving out MLB playing time in 2026 comes at third base.
Cruz gets a 40-man spot for the first time going into his age-27 season. The Tigers had left the former third-round pick unprotected in the past two offseasons. The switch-hitting infielder, the son of former big league outfielder José Cruz, earned his way onto the roster with a breakout year in the upper minors. Cruz hit .279/.411/.456 while leading all minor league hitters with 102 walks between the top two levels. The Rice product can play both left side infield positions and has the athleticism to play some center field.
Valencia is a 25-year-old catcher/first baseman who posted a monster .311/.382/.559 slash line between Erie and Toledo. He blasted 24 home runs while keeping his strikeout rate around 20%. The Venezuela native has never been viewed as much of a prospect, but the offensive performance in the high minors was too much to ignore.
Miller, a 24-year-old lefty, ranked 16th in the Detroit system at MLB Pipeline. An eighth-round pick in 2022 out of Valparaiso, he has shown an intriguing three-pitch mix with enough command and deception to project as a starter. Miller was limited to six starts between High-A and Double-A this year by a back injury, but Detroit likes him enough to keep him as a developmental play. He should begin next season in Erie.
Getting all those players onto the roster required cutting most of their depth relievers. Little and Darnell were just claimed off waivers. Detroit knew they’d be likely non-tenders but could try to bring them back on minor league deals. That’s also the case for Mattison, whom they kept out of the Rule 5 draft last winter but who had a middling year in the minors. Guenther has been up and down for the past couple seasons and missed the second half of 2025 recovering from hip surgery.
Rainey is a journeyman righty who cracked Detroit’s big league bullpen in the final week of the season. He’s narrowly shy of six years of service and therefore could have been retained via arbitration. MLBTR contributor Matt Swartz projected a modest $1.2MM salary, but Rainey is looking at minor league deals as a free agent.
Foley was probably the toughest cut. He’d been a valuable late-innings arm between 2021-24, a run which he capped off by saving 28 games last year. Foley missed all of ’25 recovering from shoulder surgery, and he would have been set to match this year’s $3.15MM salary if they tendered him a contract. They opted not to do so and are likely to cut him loose on Friday, though they have the next few days to see if there’s any trade interest.
Evan Petzold of The Detroit Free-Press first reported the Cruz, Valencia and Miller additions.