Detroit Tigers top prospect Kevin McGonigle will most likely be a major leaguer in 2026, but it’s still unclear when that will happen.
McGonigle, the consensus No. 2 prospect in baseball, has looked like a big leaguer so far with six hits and two walks over 17 Grapefruit League plate appearances for the Tigers. He has also gotten praise for his defense at shortstop, involved with a few fine plays Sunday, March 1, backing lefty ace Tarik Skubal early in a 4-4 tie with the Toronto Blue Jays.
So if McGonigle is already looking major-league ready, the Tigers are going to add him to the 26-man roster as soon as possible, right?
Maybe. Or maybe not.
Despite McGonigle looking like he could make an immediate positive impact, and potentially be an upgrade over other rostered players such as Wenceel Pérez, there are arguments for the Tigers waiting until May or even August to promote their top prospect.
Let’s break down the pros and cons for the Tigers calling up McGonigle at different points in the season.
If Kevin McGonigle makes Tigers Opening Day roster …
Pros: Tigers get full year of McGonigle, potential Prospect Promotion Incentive (PPI) pick.
Cons: Tigers start clock on McGonigle’s service time.
If the Tigers were to promote Kevin McGonigle out of spring training, they would be hoping he adds pop to the lineup. That’s a huge deal for a Tigers team looking to win now, as Detroit can potentially upgrade its roster without spending assets via trade during the season.
The Tigers could also potentially benefit from a PPI pick should they call up McGonigle within the first two weeks of the season. If McGonigle plays a full season with the Tigers and wins American League Rookie of the Year (or finishes top three in the MVP race in any of his first three seasons), the Tigers would receive an extra pick after the first round in the following year’s draft as compensation.
Those two reasons sound ideal for a team trying to win now and trying to sustain success across multiple seasons. There are arguments for the Tigers to wait to promote McGonigle, however.
If Tigers promote Kevin McGonigle in mid-April …
Pros: Tigers get most of the season with McGonigle, retain extra year of service time.
Cons: No PPI pick.
Of the three options presented here, this one is the least likely to happen. Why?
If the Tigers wait at least two weeks after Opening Day to promote McGonigle, they will lose any chance at a PPI pick and lose two weeks of time with McGonigle on the roster.
But there is one major incentive for the Tigers waiting until mid-April to call up McGonigle: service time manipulation.
If the Tigers wait a little bit to start McGonigle’s service time (at least 15 days from Opening Day to be exact), McGonigle would be in line to become a free agent in 2032 instead of 2031. One extra year of a cost-controlled player of McGonigle’s talent is valuable, especially if the cost is just a two-week wait and lost draft pick.
That’s only the cost on paper, of course. Many fans, agents and players frown on service time manipulation for top prospects, and this could be a bad look for the Tigers. Plus, there’s a less sneaky way of retaining that extra year before free agency.
If Tigers promote Kevin McGonigle in mid-August …
Pros: Tigers get McGonigle for a late-season run, retain extra year before free agency, preserve rookie eligibility for 2027.
Cons: Tigers don’t get McGonigle for most of 2026 season.
Before spring training started, this seemed the most likely outcome for McGonigle, and there are many good reasons why.
If McGonigle spends less than 45 days on the Tigers major-league roster in 2026, he will retain his rookie eligibility for 2027. That means the Tigers can call up McGonigle for a potential pennant chase late in the 2026 season and still be up for a potential PPI pick in a later year, since he would be considered a rookie on the 2027 Opening Day roster.
Calling up McGonigle this late in the 2026 season would also line him up for free agency in 2032 instead of 2031, giving the Tigers the extra year before free agency while keeping a potential PPI pick in line.
A move this late also gives McGonigle, who has never played a game above Double-A Erie, extra time in the minors to polish his game.
There is one big drawback to this approach, however. The Tigers appear to be all-in on 2026, the final guaranteed year of Skubal’s deal. There’s an argument this Tigers team is better with McGonigle than without, and the Tigers would be making themselves worse for most of the season by keeping McGonigle in the minors.
Whether that’s actually true or not is yet to be determined. McGonigle looks like a major-league shortstop but has yet to play in an MLB game, and there might be some wisdom in letting him get some experience at Triple-A Toledo in the regular season before bringing him up to the big leagues.
Whichever decision the Tigers make, only time will tell if it’s the right one.
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You can reach Christian at [email protected].
