How Will Kristian Campbell Fit Into the Red Sox’s Plans in 2026?

The old adage is that prospect development isn’t linear, but few players in recent memory can relate to the whirlwind 18 months Kristian Campbell just had. 

Campbell arrived in the Boston Red Sox system without much fanfare after being selected in the fourth round of the 2023 MLB Draft. Though he posted an adequate .267/.400/.422 slashline during a cup of coffee with the High-A Greenville Drive, Campbell produced only three extra-base hits in 45 at-bats, as his lack of power overshadowed his advanced offensive approach. 

That offseason, Campbell dove headfirst into the Red Sox’s bat speed program, and the results were immediate. His April 9 home run was the first shot to grab people’s attention, sailing well over the 420 marker in straightaway center field. 

Campbell was officially on the prospect map, and his stock would only rise from there. He earned a promotion to Double-A Portland after just 40 games with Greenville, then proceeded to annihilate Eastern League pitching to the tune of a .362/.463/.582 slashline. 

By the time Campbell arrived in Triple-A Worcester for the season’s final month, he had ensured that the Big 3 prospect group of Roman Anthony, Marcelo Mayer and Kyle Teel was now a Big 4, and his remarkable performance across three levels was rewarded with Baseball America Minor League Player of the Year honors.

Heading into the 2025 season, the consensus was that Campbell would spend the beginning part of the year getting a little more seasoning at Triple-A, as he had received just 85 plate appearances at the level in 2024. Yet, while many assumed that Alex Bregman signed with the Red Sox to play second base, the fact that he was going to stick at third base opened up the keystone position for Campbell, who would win the job out of camp despite largely unimpressive numbers. 

Much like he did in Greenville in 2024, Campbell would make headlines in the season’s opening week. He hit his first MLB home run in his third career game and finished his first week with a .429/.500/.833 line. Though he understandably couldn’t sustain that incredible pace, Campbell was still hitting over .300 by the time the calendar flipped to May, helping him take home the American League Rookie of the Month Award.

In the middle of that hitting rampage, the Red Sox announced that they had signed Campbell to an eight-year, $70 million extension. The deal, which could go as long as 10 years if a pair of club options were picked up, was a startling show of confidence in a player with less than a month of big league experience and a clear sign that the Red Sox considered him a core piece of their long-term plans. 

As quickly as Campbell’s star had risen, however, it all fell apart. He hit just .134/.184/.171 in 87 May plate appearances, striking out 24 times and registering just one extra-base hit. On defense, Campbell appeared overwhelmed with the speed of the major league game, and his -8 Outs Above Average at second base was tied for the third-worst mark in all of baseball. 

Given that Campbell ranked 181st out of 181 qualified hitters in OPS in May, it wouldn’t take much for him to improve in his third month in MLB. Yet while his .205/.340/.318 slashline represented a slight uptick in production, it was still a far cry from his April rampage, and it certainly wasn’t enough to overcome his defensive issues. The Red Sox finally decided that they had seen enough, demoting him to Triple-A Worcester on June 19. 

Though Campbell found his footing in Worcester and posted a solid .273/.382/.417 slashline, it wasn’t enough to earn a call-up back in Boston. His absence became particularly noticeable in the wake of injuries to Anthony and Mayer, as the club opted to promote the likes of Nate Eaton and Nick Sogard, despite a desperate need for offensive thump. 

Given that Campbell is still just 23 years old and is under contract for at least seven years, it would be foolish for the Red Sox to give up on a player they had shown so much faith in just six months ago. It is worth questioning, however, how things spiraled so quickly on both sides of the ball, and whether Campbell can make the necessary adjustments in time to be part of the 2026 big league club. 

Unlike many struggling rookies, Campbell’s issues at the plate weren’t a product of a poor approach. Both his 23.4% chase rate and 11.0% walk rate were well above average, and while his 27.4% strikeout rate could stand to be reduced, it was a lower mark than that of standout rookies Nick Kurtz (30.9%) and Colson Montgomery (29.2%). 

Campbell’s biggest offensive flaw was not his frequency of contact but rather his quality. While players like Kurtz and Montgomery succeeded by pulling fly balls in the air, Campbell’s batted ball profile was more akin to a speedy slap-hitter:

• Pulled percentage: 27.8% (339th out of 348 hitters with at least 200 at-bats)
• Pulled air percentage: 10.1% (334th)
• Groundball percentage: 54.4% (10th)
• Opposite-field groundball percentage: 12.7% (5th)

These tendencies would be troubling for any hitter, but they are especially problematic for a right-handed hitter at Fenway Park. While the Green Monster looms just 310 feet away, straight right field is 380 feet from home plate, making any opposite-field home run a colossal feat.

Though the sample was small, it’s fair to say that these dimensions played a part in Campbell’s struggles, as he hit .155/.288/.182 at home compared to .281/.351/.496 on the road. 

Baseball Savant’s Expected Home Runs tool paints a similar picture. His three expected homers at Fenway Park were tied for the lowest at any ballpark and half the total of stadiums like Comerica Park and Yankee Stadium with short right field porches. 

Despite better overall numbers after his demotion to Worcester, Campbell only saw modest improvements in these areas. Per Prospect Savant, his pulled air percentage ticked up from 10.1% to 14.4%, which still only ranked in the 33rd percentile of Triple-A hitters.

Even more concerning is the fact that Campbell stopped driving the ball with any authority. He ranked in the fourth percentile of Triple-A hitters with an 84.1 mph average exit velocity, and his .210 expected batting average was even lower than his MLB mark of .221. 

This data helps explain why the Red Sox did not feel comfortable calling him up in September, as there was nothing to suggest he would handle major league pitching any better than he did in his first MLB go-around. 

As easy as it is to identify Campbell’s physical struggles in 2025, it’s worth talking about the mental aspect of his shortcomings as well. Getting optioned just two months after receiving a long-term extension would affect even the most confident of players, and Campbell appeared both indecisive and passive during his time in Worcester. 

He registered a zone swing percentage of just 56.3%, ranking in the seventh percentile of Triple-A hitters and representing a nearly six percent drop from his stint in Worcester in 2024. 

Given the enormous mental toll of Kristian Campbell’s 2025 campaign, it’s no surprise that the Red Sox have emphasized the need for the 23-year-old to prioritize rest at the outset of the offseason. 

“Sometimes an offseason is what these guys need at times,” director of player development Brian Abraham told The Athletic’s Jen McCaffrey. “As someone who dealt with so much in a year, a lot of really good stuff, not to mention signing a pretty large contract, which is a credit to him and the organization’s belief in him. But I think some time away from the field and from baseball was a really good thing.”

When Campbell returns to Fort Myers for offseason training, his focus will be on adding strength to better prepare him for the grind of a 162-game season. 

“A big focus for him this offseason, he lost some weight during the year, adding some of that weight back, and it’ll be getting back the strength that allowed him to impact the baseball the way he could,” Abraham said. 

The Red Sox hope that rest and strength training can help Campbell rediscover his 2024 form at the plate. Finding his optimal defensive home, however, may prove to be a more difficult task. 

After playing second base for the majority of his final college season with Georgia Tech and his professional debut in 2023, Campbell split time between second base, shortstop and center field in 2024, registering between 204 and 310 innings at each position. 

Despite him winning the second base job out of spring training, the Red Sox still played Campbell in center field once a week over the first two months, seeking both to take advantage of his versatility and athleticism and to take the pressure off a struggling Ceddanne Rafaela. 

Campbell’s defensive versatility was tested further after the injury to first baseman Triston Casas, as the Red Sox had him begin taking pregame work at the cold corner to evaluate him as a potential replacement option. Although he never got an appearance at the position in the majors, Campbell spent the plurality of his minor league stint at first base in an attempt to position himself for a late-season call-up. 

Perhaps realizing that the Red Sox may have put too much on Campbell’s plate, chief baseball officer Craig Breslow acknowledged the potential benefits of having Campbell commit to one position in 2026. 

“That’s something we’re actively discussing,” Breslow said. “Even if that may not be the case long-term, perhaps in the short term, just giving him some stability and certainty to where he’s going to play and maybe easing some of the kind of mental demands on trying to play multiple positions at the same time.”

What position that will be depends heavily on what the Red Sox do this offseason. While MassLive’s Chris Cotillo reported that team officials acknowledge that outfield — and specifically left field — is likely Campbell’s long-term home, the Red Sox already have a surplus of outfielders in Jarren Duran, Rafaela, Anthony, Wilyer Abreu, and Masataka Yoshida. They won’t have a clear spot for Campbell even if they trade away one or possibly two players from that group. 

First base would be a potentially clearer avenue to playing time, given Casas’ injury history and uncertain availability for Opening Day, but it would be a curious decision to move Campbell to the bottom of the defensive spectrum at his peak athletic years. The Red Sox seem far more likely to address the position with a big bat like Kyle Schwarber or Pete Alonso, two players they have been linked to in free agency. 

That leaves second base as the most likely fit once again, but even the position Campbell won out of spring training has its caveats. Fellow rookie Mayer took over the position after Campbell’s demotion and proved to be a much more capable defender. And even if Mayer slides over to third base to replace Bregman, it would be difficult for the Red Sox to pencil Campbell in, given how much he struggled there last season. 

If Campbell had had more success as a big league hitter in 2025, the Red Sox might feel more compelled to move pieces around to create an everyday role for him out of the gate. Yet, because the offensive questions are just as prominent as the defensive ones, he is going to have to earn his way back to the big leagues. 

The most likely scenario for the beginning of 2026 is that the Red Sox send Campbell back to Worcester with a defined position, most likely one of the two corner outfield spots. With less on his plate defensively, the hope is that Campbell will be able to regain his 2024 Minor League Player of the Year form at the plate. 

There is no question that Campbell is still a major part of the Red Sox’s future plans. When that future arrives, however, will be determined by how quickly he can get back to playing with confidence and driving the ball with authority.