In Limbo: A Post-Prospect Look at Kristian Campbell

We’re putting a bow on Prospect Week with a post-hype look at one of last season’s top farmhands, Kristian Campbell. This time last year, Campbell was the biggest riser on prospect lists across the industry, a consensus top 10 player who had gone from relative obscurity to the cusp of the big leagues in just a year. Now, as we head into the spring’s first contests, he’s fallen out of the lineup and is likely to begin the 2026 season in Triple-A. His career path serves as a good reminder that growth isn’t linear, and that a player’s development path doesn’t conclude when he reaches the majors or exhausts his status as a rookie.

After playing just one season of college baseball, Boston selected Campbell in the fourth round of the 2023 draft as a toolsy player with contact skill but also a quirky, choppy swing. He put on 15-20 pounds of muscle that offseason, which helped spark an offensive explosion. His power shot from average to plus overnight, and he started lifting the ball more, both of which he managed without ballooning his whiff rates out of proportion. He posted a 178 wRC+ across three levels that season, with 20 homers and a sub-20% strikeout rate. Though little about his operation in the box looked conventional, plenty of evaluators — including, critically, the Red Sox brass — fully bought in. The Red Sox put Campbell on the Opening Day roster and then inked him to an eight-year, $60 million extension less than a week into the season.

Initially, all went well. Campbell won AL Rookie of the Month honors in April after hitting .301/.407/.495 with four homers. His strikeout rate crept north of 25%, which wasn’t itself alarming, as it came with power and a 15% walk rate; it’s perfectly normal for rookies to swing and miss a bunch as they adjust to the league anyway. Defensively, Campbell was primarily playing second base while also filling in left and center. He didn’t look great at the keystone, and the jury was still out on his long-term defensive home, but if nothing else, his versatility was itself a boost for the ballclub.

On April 30, Campbell went 0-4 in a game against the Blue Jays, and then missed the next three games with rib discomfort. We can’t know to what extent that injury bothered him. Campbell, for his part, said it wasn’t an issue by late May: “No. That’s all clear. There was just a little side discomfort, but it’s all good.” Regardless, it was a turning point in his season:

By mid-June, the Red Sox had seen enough and sent Campbell to Triple-A for the remainder of the season. Critically, his dip in production coincided with a sudden and complete inability to pull the ball.

April:

May:

Campbell wasn’t mauling good velo over the Green Monster even in April, but he did hit some heaters hard to the left of second base and had no trouble driving spin out to left. He got back to that in Triple-A, though somewhat troublingly all of his pull-side damage came on hanging breaking balls. As Campbell gutted through an unspectacular summer in Worcester — 118 wRC+, 26.7% strikeout rate — the Red Sox lineup hummed without him. A mix of players capably filled in at second, Romy Gonzalez most notably among them, while Boston had more good outfielders than room to play them. All over the headlines in March and April, Campbell ended the 2025 campaign a forgotten man.

Even at his peak, Campbell was a somewhat divisive player. While some scouts were willing to overlook his unorthodox swing, others were apprehensive about his mechanics. He had a double toe tap and then a big front hip leak that worked in part because he has huge hip-shoulder separation and was able to keep from flying open even as his lower half crept toward third base. The upper half was also concerning for some evaluators, as Campbell’s violent and rotational hack came with a lot of head movement and often left him off balance. Plus bat speed and good hand-eye coordination helped, but not everybody loved what they saw.

Having literally bought the breakout, it’s fair to wonder if Boston is now taking the collapse at face value as well. There are signs, if you want to look at it that way. The Red Sox sent Campbell to winter ball this offseason, hoping that quieter movements in the box will again let him get to his power. Between those adjustments, the trade for Caleb Durbin, and unsettled defensive plans that initially seemed to focus on the outfield but then made room for him to take groundballs once back in camp (all of this just a few months removed from when he started working in at first base), you’d be forgiven for thinking that he’s not in the club’s immediate plans. Fair enough, given last season’s production and this season’s lineup.

But all of the tinkering raises more questions than it answers. Were Campbell’s struggles last May and June really the inevitable result of an unconventional swing? Is it possible that the league’s adjustments to the young upstart, possibly combined with a nagging rib issue, did a number on a rookie already shouldering a difficult defensive load after very little collegiate and minor-league seasoning? You can make arguments for, against, or in between on those questions; the guy is in limbo, after all.

Last year, just after Campbell’s demotion, Eric wrote, “I, like most everyone, entered 2025 convinced that this weirdo swing would work for Campbell even though it’s unconventional. Though he was demoted shortly before [list] publication, I still think it will… two years ago, this guy was playing in his lone college baseball season and now he’s facing the best pitchers in the world. He deserves time to adjust and hopefully get stronger so it doesn’t take his entire body winding up for him to swing hard.”

I’ll sign on to that idea, and the comment about increased strength in particular. It’s a long season, and all the moving parts in Campbell’s swing mean that a minor disruption to one area of the body might just throw off the whole operation; having the strength to withstand the rigors of the schedule is important for everyone, but perhaps him especially. And let’s not lose sight of the talent here. However unusual, Campbell’s bat speed, short swing, and good approach were, for a time, effective. The history of this sport is full of guys who went the other way with fastballs and tugged breaking balls, and for a month it looked like Campbell had found a way to follow those footsteps. I still think he can; whether or not he will is for us to find out.