Poll: Which Top Prospect Will Arrive In Boston Next?

After an offseason that saw the Red Sox get aggressive in improving the big league club by adding Garrett Crochet, Walker Buehler, and Alex Bregman, the club showed a different kind of aggressiveness when they included top infield prospect Kristian Campbell on their Opening Day roster. That move has certainly paid off for them so far; not only has Campbell signed on with the club long-term, but he’s hitting an excellent .318/.426/.545 across his first 13 games in the major leagues while serving as the club’s regular second baseman and occasionally making appearances in the outfield.

Campbell wasn’t the only top prospect the Red Sox had knocking on the door to the majors this spring, however. Outfielder Roman Anthony and infielder Marcelo Mayer are rated just as highly as Campbell, with all three being consensus top-15 prospects across the entire sport. While a vacancy at second base and Campbell’s impressive work flying through the minor leagues last year were enough to get him called up to the majors first among the trio, it should surprise no one if all three are in the majors in relatively short order. With that being said, it remains unclear which of Anthony and Mayer are most likely to make it to the majors next.

Anthony, 21 next month, has a strong case to come up and contribute soon. As a consensus top-two prospect in the sport who has been ranked number one overall by multiple major publications, Anthony’s ceiling is immense. Last year, he slashed .291/.396/.498 between the Double- and Triple-A levels, including a phenomenal .344/.463/.519 slash line when looking just at his 35 games (164 plate appearances) at the highest level of the minor leagues. That hot finish at Triple-A created plenty of buzz about the possibility of Anthony breaking camp with the Red Sox over the offseason, but Anthony’s .206/.391/.324 slash line in Spring Training this year wasn’t enough to convince Boston brass that their top prospect was ready for the next step.

His early season performance at Triple-A hasn’t exactly demanded consideration for a promotion, either. Through ten games, Anthony is hitting .177/.364/.412 in his return to the club’s Worcester affiliate. While that’s a sample of just 44 plate appearances, Anthony’s 31.8% strikeout rate so far this year at the very least suggests he’s running a bit cold right now, though that he’s been able to walk at a 22.7% clip and bash a pair of homers while doing so is certainly impressive. MassLive’s Chris Cotillo recently suggested that the Red Sox are currently hoping to see more production from Anthony against left-handed pitchers before he makes it to the big leagues. That’s on top of a need for Anthony to work on his defense, which will be challenged as he appears likely to move from center field to left upon being called up to the majors.

That to-do list and Anthony’s middling play early in the season could open the door for Mayer to beat him to the majors. The 22-year-old provided a strong challenge to Campbell for the second base job during Spring Training as he hit .333/.455/.528 during camp, though Mayer’s lack of experience above the Double-A level always made him a less likely option to get the job. Mayer’s first taste of Triple-A has seen him cool off significant relative to his spring performance, as he’s hit just .243/.282/.405 with a 28.2% strikeout rate through nine games at the level. He’ll surely need to start hitting better than that with Worcester before he gets called up to the majors, although the club hasn’t laid out any more specific issues that Mayer needs to address before he can be called up like they have with Anthony.

The fact that the club has specific areas they’d like to see Anthony grow before he reaches the majors, in conjunction with Mayer finishing as arguably the runner up behind Campbell for the club’s starting second base job, would seem to suggest that Mayer is closer to being promoted than Anthony is. However, Anthony has one major leg up in this conversation relative to Mayer: the construction of Boston’s lineup. With Campbell serving as the club’s regular second baseman, there is no longer an obvious spot on the infield which Mayer can take up. Campbell, Triston Casas, Alex Bregman, and Trevor Story are all slated for regular at-bats this year, and even the DH role is filled by Rafael Devers on a daily basis.

Either an injury somewhere on the infield, a move to the outfield for Campbell, or a shocking move to bench Story would likely be necessary for Mayer to muscle his way into the lineup at this point. The same cannot be said of Anthony, who has a fairly straightforward path to playing time in the club’s outfield mix. Ceddanne Rafaela has served as the club’s usual center fielder entering the 2025 campaign, but he’s hit just .243/.275/.378 in the majors to this point in his career, including a paltry .205/.279/.205 line so far this year. While he’s a brilliant defender in center field, that’s not the type of production that should keep a team from promoting the sport’s top prospect to the majors once he’s ready. Rafaela, who has the ability to play both the infield and the outfield, could move to a utility role on the bench similar to the one Enrique Hernandez once filled once Anthony is ready to go. Anthony could either plug in directly for Rafaela in center field, or he could be tasked with manning left field while Jarren Duran slides over to center.

How do MLBTR readers think things will play out? Will Anthony make it to the majors first, off the back of his status as the sport’s #1 prospect and a potential opening in the outfield? Or will the club’s desire to see Anthony hit more against southpaws in the minors and Mayer’s strong work in Spring Training be enough to get him to the majors first? Have your say in the poll below: