3 Up, 3 Down: Kaelen Culpepper

[Cody Christie]

Image courtesy of Rick Osentoski-Imagn Images

Kaelen Culpepper's first taste of the big leagues provided plenty for Twins fans to evaluate. The 2023 first-round pick spent most of the season at Triple-A before making his MLB debut, and while his time in Minnesota was limited to 33 games, he showed several tools that could make him an important part of the organization's future.

Culpepper's debut was not perfect. There were some obvious holes in his offensive game, particularly against breaking pitches, but there were also signs that his physical tools can translate to the highest level. Here are three things that stood out in a positive way and three areas Culpepper will need to improve.

Up 1: Legit Arm Strength

Culpepper's arm strength was touted dating back to his college days, but Twins fans got to see that tool on full display this season. He posted an 88.5 mph average arm strength, placing him in the 77th percentile among MLB players. That's an important tool for a player who could potentially move around the infield during his career.

If Culpepper eventually has to move to third base, his arm could help make that transition much easier. Shortstop is still the most natural fit for him, but having legitimate arm strength gives the Twins additional flexibility as they determine where he fits best long term.

Up 2: Bat Speed

Culpepper's bat speed was another tool that immediately stood out during his debut. He averaged 73.7 mph of bat speed, a figure that would have ranked in the top 30% of MLB had he accumulated enough plate appearances to qualify. That's an encouraging sign for a young hitter who was not afraid to attack pitches during his first exposure to big-league pitching.

Culpepper's aggressive approach can lead to some swing-and-miss, but the underlying bat speed gives him the ability to do damage when he squares up a pitch. The next step will be turning that raw bat speed into more consistent quality contact.

Up 3: Base Running

The Twins need more athleticism throughout their roster, and Culpepper represents part of a younger wave of players who can provide it. Even with only 33 games under his belt, Culpepper produced a positive Baserunning Run Value. 

That came despite having a 60th percentile sprint speed, showing that effective baserunning isn't simply about having elite straight-line speed. Good instincts, aggressiveness and taking advantage of opportunities can create value on the bases. Culpepper showed signs of doing that during his brief stint in the majors.

Down 1: Hard-Hit Percentage

Culpepper's aggressive swing can produce hard contact, but his Triple-A performance did not carry over completely to the majors. At Triple-A, he posted a 45.5% Hard-Hit rate. That number dropped to 31.1% during his big-league debut. Had he qualified, that figure would have fallen below the league average.

There is plenty of reason to believe the number can improve. Culpepper has the bat speed and physical strength to hit the ball hard. The challenge will be making more consistent contact against MLB pitching while maintaining the aggression that makes his swing dangerous.

Down 2: Walk Rate

Culpepper showed a much better ability to draw walks in the minors than he did during his first taste of the majors. He posted an 11.4% walk rate at Triple-A this season. That number nearly disappeared in Minnesota, where he walked only six times in 128 plate appearances for a 4.7% walk rate.

Culpepper is never likely to be a hitter who piles up walks, and the Twins don't need him to become one. However, he needs to find a middle ground between being aggressive and expanding the strike zone. A higher walk rate would give him more opportunities to utilize his speed and athleticism while also helping offset some of the swing-and-miss that comes with his aggressive approach.

Down 3: Breaking Down

Breaking pitches were one of the biggest trouble spots for Culpepper during his debut. He did not record an extra-base hit against breaking pitches and posted a .223 expected batting average and .274 expected slugging percentage against them. Those numbers point to an area that opposing pitchers are likely to continue attacking until Culpepper proves he can handle it.

Adjusting to breaking stuff is one of the biggest challenges young hitters face when they reach the majors. Culpepper's bat speed gives him a foundation to make that adjustment, but recognizing spin and staying disciplined against breaking pitches will be critical to his development.

The Bigger Picture

There is a lot to like about Culpepper's first taste of the majors, but there is also plenty of work remaining. His arm strength, bat speed and baserunning ability give him several legitimate tools. At the same time, the drop in hard-hit rate, lack of walks and struggles against breaking pitches demonstrate why the Twins should continue giving him opportunities to develop rather than expecting him to arrive as a finished product.

The most important part of Culpepper's 2026 season may be that he got his first extended look at what major-league pitching is going to throw at him. Now the Twins will get to see how he responds. Culpepper has the tools to be an important piece of Minnesota's next winning roster. The question is how quickly the offensive adjustments come.

The physical tools are evident. His arm strength can play at multiple infield positions, his bat speed gives him offensive upside and his athleticism can add another dimension to the Twins' lineup. The next step is turning those tools into consistent production.

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What stands out most about Culpepper's debut season? Should the Twins be comfortable with him being the Opening Day shortstop? Leave a comment and start the discussion.

 

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[MeleMouth]

His chase rate at pitches outside the strike zone was 42.8%. Of 135 hitters who qualified in 2026, only seven chases more frequently. An interesting comp is Andres Gimenez, who had similar barrel and hard hit percentages, with a wRC+ of 81.

[weitz41]

I'm going to root for the upside and say other than 1B the next 4 years or more of the infield looks very promising. The outfield does as well, just not as comfortable with thinking all of them will turn out as projected. Just need a younger 1st baseman who has some slug and plays at least average defense. 

Culpepper may or may not be the long-term SS for the Twins. But I believe he's a long-term member of the Twins.

[Patzky]

4 minutes ago, weitz41 said:

I'm going to root for the upside and say other than 1B the next 4 years or more of the infield looks very promising. The outfield does as well, just not as comfortable with thinking all of them will turn out as projected. Just need a younger 1st baseman who has some slug and plays at least average defense. 

Culpepper may or may not be the long-term SS for the Twins. But I believe he's a long-term member of the Twins.

You're right about 'not all of them'. Sheer volume says we will have a few serviceable MLB players, a few above average, and maybe one star out of Lackey, Jenkins, Culpepper, Houston, Keaschall, Roden, Lee, Emmy, Mendez, Tinney, Winokur.  Of course not long ago we said the same of Lewis, Julien, Wallner, Miranda, Martin, Jeffers, 

Hindsight is such fun!

[Linus]

I’m not worried about metrics at this point. He’s got the athleticism to be a big leaguer - now we just hope for good progress. 

[MeleMouth]

10 minutes ago, Patzky said:

You're right about 'not all of them'. Sheer volume says we will have a few serviceable MLB players, a few above average, and maybe one star out of Lackey, Jenkins, Culpepper, Houston, Keaschall, Roden, Lee, Emmy, Mendez, Tinney, Winokur.  Of course not long ago we said the same of Lewis, Julien, Wallner, Miranda, Martin, Jeffers, 

Hindsight is such fun!

Hindsight is when you know better after someone else made a mistake.

Hindsight is not when you learn from past mistakes to avoid future mistakes. 

One thing we can learn from past mistakes is don't count your chickens until they're hatched.

But many will probably do it again. "We have great prospects. Some are going to be stars!"