Twins Lean Into Innovation With Pitching Development Overhaul

[Cody Christie]

Image courtesy of William Parmeter

Player development is often where organizations separate themselves, and the Minnesota Twins are making sure they are not standing still. In a recent appearance on Inside Twins, Director of Player Development Drew MacPhail offered a detailed look into how the organization is rethinking pitching usage and in-game strategy across the minor leagues.

What emerged from the conversation was a clear theme. The Twins are not just tweaking around the edges. They are actively challenging long-held norms about how pitchers are deployed and how information flows during a game. The goal is not only better performance today, but a more adaptable and durable pitching pipeline for the future.

One of the most notable changes centers on how starting pitchers are used. Traditionally, starters work every five days and build toward 100 pitch outings. Minnesota is pushing against that model by experimenting with a four-day rotation paired with shorter outings. Last year, the Twins tried it with a handful of guys, but this year, it's expanded to about a dozen pitchers.

“Honestly, we've been doing a lot of research and talking a lot about this for a long time,” said MacPhail. “We experimented with it in 2025 in a smaller group, and we saw a ton of success. I think the idea behind it…was basically the idea that some of your starting pitcher type guys, some of your best pitchers in the organization, if you put them on a four-day, there's actually some interesting research that they could actually bounce back a little bit quicker if kept under a certain pitch count.”

MacPhail continued, “And the benefit of that was they'd actually be able to accrue more innings over the course of a season on that schedule. So we sort of started with a pilot program, and what we saw was the guys that we put on that program having more success in that four-day type role than they had in the previous year, as well as taking down more innings. The group was excited about kind of rolling it out to a bigger group this year, and that's what you're seeing so far in the 2026 season.”

The early results gave the Twins confidence to expand the program, and the structure has already produced meaningful workloads. Pitchers like John Klein approached the 100-inning mark last season, a significant benchmark for developing arms.

That shift, however, creates logistical challenges. With a mix of four-day and five-day starters and a universal off day, overlap is inevitable. Instead of viewing that as a problem, Minnesota is turning it into an advantage through piggyback outings.

“I think what you ultimately see is you have some of your best starting pitchers sort of piggybacking each other,” said MacPhail. “So, an example of that that happened recently was Connor Prielipp and Kendry Rojas. Kendry was on that four-day schedule, Connor was in a true five-day starter type role. Those guys piggybacked each other and ended up taking down eight plus innings of incredible baseball and Triple-A.”

“So I think what it ultimately means is you have sort of more of your starter type guys pitching on top of each other more, but ultimately that's sort of one of the benefits as well, is you kind of have two guys going back and forth, giving you a lot of innings, actually more than a starter pro typically would, is the idea and some two of your best pitchers taking over that workload.”

Beyond the immediate results, the approach also creates flexibility in how pitchers transition to the majors. Instead of forcing a binary choice between starter and reliever, the Twins are building pitchers who can handle multiple roles depending on need.

The Twins are not stopping with pitcher usage. They are also experimenting with coaches calling pitches during games, a responsibility that has traditionally been the catcher's at the professional level. This is the norm in college baseball, with nearly every program having the coaches call the pitches.

“The first is our pitching coaches spend a ton of time going over the advanced process game planning for hitters,” said MacPhail. “Our catchers do as well. But I think if you broke down that time a lot, then the pitching coaches are really the ones that are digging into it and putting in the most work and effort on that front and then helping educate the catchers on that.”

MacPhail discussed how the pitching coaches have the information in front of them during the game, making it easier to call pitches. The catcher is relying on recall and memory, which can be challenging with in-game batter changes, different matchups, etc.

“I think if you think about it from the outside looking in, it makes sense, just like you see an offensive coordinator or defensive coordinator in the NFL or college football calling plays, that the pitching coach would be calling plays, right? So I think it's a copycat league. We've seen some other organizations do that this past year.”

So, what are the benefits of coaches calling pitches?

“I think there's an ancillary benefit of our lower-level catching prospects, learning the pitch coach calling process from our pitching coaches, kind of spurring more dialogue there. Additionally, I think those games when they're not calling pitches, it helps free them up, and we're interested in do they perform better offensively? Do they perform better from a receiving standpoint, from a blocking and throwing standpoint?”

“There's so many things they have to worry about during the course of a game. If we take this sort of mental workload off them, well, we actually see their performance take up some too. So, you know, I'm not going to pretend like we know for sure that it's going to be a huge success, but it's something that we want to experiment with in the minor leagues, and ultimately, you know, it's a testing ground to bring these concepts to the major league team.”

For an organization that has consistently emphasized development, these changes represent a willingness to rethink the blueprint. Not every experiment will stick, and MacPhail was clear that there are tradeoffs worth evaluating. Still, the Twins are leaning into the idea that the minor leagues should be a proving ground for innovation.

If the early returns hold, Minnesota may not just be developing pitchers. It may be reshaping how they are developed across the game.

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Will these changes be successful in the minors? How will this impact the big-league level? Leave a comment and start the discussion. 

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[mikelink45]

Great article thanks for your helping us see what's going on

[Eris]

This makes a lot of sense. A team would need 8 effective pitchers to make it through the rotation with 5 for relief type roles. The challenge will be finding 8 effective pitchers who can go 2X through the order.