2026 Boston Red Sox Top Prospects Ranking

When the Red Sox signed Franklin Arias as an international free agent, they did so with the thought of him evolving into a Gold Glove shortstop. Since then, he’s consistently surprised the organization with his ability to put the ball in play, turning himself into a top prospect within the organization. The 2025 season took his outlook to a whole other level.

Playing as a 19-year-old, Arias showcased his abilities out of the gates, opening the season with Salem before becoming one of the youngest players in High-A with Greenville. His performance there allowed him to finish the season with Double-A Portland, roughly 4.5 years younger than the average player. In 116 games between the three levels, Arias hit .278/.335/.388 with 27 doubles, one triple, eight home runs and 66 RBIs, all while playing elite defense at shortstop.

Arias’ ability to make contact is thanks in part to his quick hands and a swing that is line-drive oriented. The young infielder also has great barrel control and a feel for contact. Despite all those positives, however, he does not have the best bat speed and needs to improve his approach at the plate, as he can get too aggressive. Arias has a habit of attacking fastballs early in an at-bat as he tries to hit the ball all over the field. With secondaries, he sometimes has difficulty recognizing the pitch out of a pitcher's hand, leading to high chase rates, though some of that is balanced out by strong in-zone contact skills.

Power-wise, he has meager over-the-fence pop and it’s not a big part of his game. He can, however, produce great exit velocities for his age. Arias is a gap hitter due to his line-drive approach and scouts have described his power as below average.

Speed is also not a big part of his game, as he’s viewed as having below average speed. While he can go first to third on a single or second to home, he will never be viewed as a speed threat. He does make up for his lack of speed with quality baserunning instincts, but he won't derive a lot of his value on the basepaths.

Defense is what Arias is best known for. The infielder is mainly a shortstop but has also seen some time at second base. He has great range and is comfortable playing all angles when charging the ball. He also has the ability to make difficult plays look rather routine. Still just 20 years old, he’s viewed as one of the best middle-infield gloves in all of the minor leagues.

Arias’ value will be determined by how his hit tool continues to develop. Already he’s shown that he can handle shortstop at an elite level, but should his bat not continue to develop, he might peak as a defense-first utility infielder. If his offense continues to improve, he can become a quality starting shortstop despite his lack of power and speed.

Arias will open the season with Portland, where he’ll man the six. In 2025, he only got to play 10 games there and the organization will want to see how he handles a prolonged exposure to higher-level pitching. Given his youth, it wouldn’t be a surprise if he spent the entire season with Portland. If he gets promoted, it would likely be in a similar situation to his schedule last year — a late season showcase against the next minor-league level.

Selected in the third round of the 2025 draft out of Louisiana State University, Anthony Eyanson may end up being one of the biggest steals for the Boston Red Sox in recent years. Eyanson completed his junior season at LSU by winning the national championship, ultimately garnering attention as a top-50 draft prospect. As the Saturday starter for LSU, Eyanson made 20 appearances, 18 of them starts, and went 12-2 with two saves across 108 innings. He was dominant on the mound, allowing just 36 earned runs.

Things would not work out perfectly for Eyanson, however, as the right-hander slid to the third round, where the Red Sox selected him at the 87th pick.

Eyanson is a very intriguing pitching prospect, one who continues to fit in with Craig Breslow’s desire to acquire pitchers who are big (he stands 6-foot-2 and weighs 210 pounds) and have good extension (6.41 feet). The right-hander has a polished arsenal made up of a fastball, slider, curveball and changeup, and he's got strong control of each of those offerings.

His fastball routinely sat between 92 and 94 mph in college, occasionally topping out at around 97 mph. However, in his first week of spring training, the right-hander managed to get it up to 98 mph. His slider has more vertical break to it instead of horizontal (i.e., more traditional power slider than a modern sweeper) and despite a lower spin rate, it can miss bats. It also manages to generate a high chase rate despite not landing in the zone all that often. In college, the slider managed to produce a 52% whiff rate and could become his main "out pitch" in professional baseball.

Eyanson’s curveball is thrown competitively, but despite a good amount of vertical depth, it fails to miss as many bats as would be expected. It is used more often against left-handed batters. Finally, his changeup may be his weakest pitch, as he fails to consistently land it in the strike zone, and he may need to adjust the low-80s offering as he graduates various levels in the system.

In college, Eyanson showed an ability to rack up strikeouts, finishing the 2025 season with 152 in just 108 innings. There is no reason to believe that should change once he gets his first taste of minor league baseball thanks to his fastball, slider and curveball. Early on in spring training, he has looked good on the backfields while throwing live at-bats.

One of Eyanson’s best traits is his ability to limit free passes. While his strikeouts were well documented (33.9% rate), he managed to walk just 36 batters with LSU, good for an 8.0% walk rate. Thanks to this, Eyanson already has a high floor and comes with little reliever risk. Should he manage to maintain the increased velocity he’s showing with his fastball across the entire season, he would project as a mid-rotation arm.

Eyanson is likely to open the year in High-A Greenville, but thanks to his strike-throwing ability along with his already-polished arsenal of pitches, he could be promoted to the upper levels of the organization quickly. The right-hander is confident in his own abilities and is entering 2026 with a determination to prove he should have been taken within the first two rounds of the draft. He’ll be an interesting pitcher to watch, especially if he can find an arm-side pitch to throw to left-handed hitters.

The Red Sox were lauded for a strong performance during last year's annual amateur player selection process, especially during the first day of the draft. The biggest steal of that day could be argued as any of the three pitchers the Red Sox drafted, however, none stand out more than the first player who fell right into their laps.

Drafted 15th overall, Kyson Witherspoon was viewed as a consensus top-10 talent prior to the event. Fortunately for the Red Sox, the right-handed pitcher from Oklahoma State slipped and ended up available right in the middle of the first round. Witherspoon dominated in his final season at Oklahoma to the tune of a 10-4 record and 2.65 ERA in 16 starts. In that span, he threw 95 innings and struck out 124 batters, thanks in part to his velocity and secondary pitches that have scouts drooling over his potential.

Witherspoon, who turned 21 in mid-August, made significant strides during his college career and is already implementing some changes in Boston. One of the more notable alterations to his profile was the addition of a sweeper he worked on over the winter with Driveline, and the pitch is already flashing some impressive break. No prospect with the Red Sox averaged close to 20 inches of horizontal break with a sweeper, but Witherspoon’s managed that after one offseason of working on the pitch.

The rest of Witherspoon’s arsenal is made up of a fastball, cutter, slider, curveball and changeup. Unlike other pitching targets by the Red Sox, his extension is under six feet (averaged around 5.7 feet). However, he’s able to repeat his delivery easily and hides the ball well throughout his throwing motion.

His fastball averaged 95 to 97 mph in college, which he maintained during his first two innings of game action in minor-league spring training. His velocity seems to have improved since being drafted (in terms of maintaining upper-echelon consistency), which will pair well with his strong command. However, the pitch gets its bat-missing ability from its velocity and not its shape.

His cutter was used often in college as a pitch he threw for consistent strikes. Velocity-wise, it averaged between 88 and 91 mph, though it's shown an ability to miss bats while also inducing batters to chase outside the zone. Likewise, his slider is a pitch he was able to use to generate whiffs, especially against right-handed batters. Both pitches have plus tendencies and are viewed as being potentially above average.

The curveball, on the other hand, is seen as a middling offering, and that's if he learns to consistently land it in the zone. In college, it sat 78 to 82 mph and is considered to have good depth on its break. When he’s able to command and control it he can generate a few whiffs.

His changeup is certainly the one that needs the most development (ignoring the new sweeper). The pitch has managed to reach the low-90s, but it was his least used offering in college and lacks the fade/tail to really dominate lefties down and away.

Overall, Witherspoon has a chance to join the likes of Payton Tolle and Connolly Early as pitchers who moved through the system quickly. He's got a projectable mid-rotation future, though there's no denying the ace upside occasionally flashing in his profile. His fastball, despite being viewed as his best pitch, could also be in line for some tweaking should the Red Sox want it to have a different shape.

Witherspoon, barring a surprise placement, will open the season in Greenville much like Tolle did the year prior. Though, should he dominate High-A batters, it wouldn’t be a surprise if he is promoted to Portland by some point in June. The Red Sox have been aggressive the last few years when it comes to promoting prospects that are performing well, and it shouldn’t be any different with the draft class of 2025.

Saying that Justin Gonzales is a physical specimen is an understatement. Entering spring training this season, Gonzales was measured at 6-foot-6 and 277 pounds. That was after being last measured at 6-foot-4 and 210 pounds. While the previous weight may have been outdated, it’s still fascinating to see the 19-year-old continue to grow, even stating that his goal is “to be like Aaron Judge."

Gonzales was part of the team’s 2024 international free agent class and in his first professional season at the Dominican Summer League, he put on a show offensively by hitting .320/.391/.517 with four doubles, five triples, five home runs and 29 RBIs in 47 games. He would come stateside for 2025, when after just one game in the Florida Complex League, he would be promoted to Low-A Salem and play in 81 games. He went on to hit .298/.381/.423 with 23 doubles, two triples, four home runs and 27 RBIs in that stretch before finishing the season with 11 games in Greenville.

Offensively, there is no doubt that Gonzales is one of the organization’s best prospects. He has a quick bat and has solid barrel control for his size. His 90th percentile exit velocity was 107 mph and his highest was 113 mph. Thanks to an advanced approach at the plate, he’s able to let a pitch come in to him deep and send it the other way to right field instead of just trying to pull everything. With a good understanding of the strike zone, he doesn’t strike out too much, though he does struggle to recognize secondary pitches. Despite being just 19 years old, he's already impressing in spring training. On March 2, he was called up to play in a Red Sox spring training game and had a single with an exit velocity of 117.3 mph. It would have been the 12th-hardest exit velocity in Major League Baseball in 2025. 

His power is really impressive as it’s viewed as being easily above average by scouts. With his size and swing, he generates easy pop as the baseball jumps off his bat and he can drive the ball to all parts of the field. Unfortunately, he doesn’t take full advantage of it due to a 57% groundball rate. If Gonzales can improve his bat path and launch angle, he could really tap into his power and become an offensive beast.

Defensively, Gonzales has spent time at first base and all three outfield positions. In 2025, he spent the entire season split between the three outfield positions, though due to his size he will likely play either first base or a corner outfield position as he continues to advance through the minor leagues. He showcased good range in the outfield but struggled when it came to his jumps and routes. Despite that, his arm is considered above average and would play well at either corner outfield position.

Gonzales’ speed is also below average, though he moves well for someone his size. While he won’t steal many bags, he won’t clog up the basepaths and should be able to go from first to third or second to home on outfield hits.

Gonzales will look to continue his impressive start to his professional career in 2026. He’ll be entering his first full season (having only played 93 games in 2025) and it’ll be a good chance to see how he holds up across a full stateside campaign. Should Gonzales continue to develop at the plate, there’s a chance he could be up with Boston by 2028. Unfortunately, with an All-Star ceiling comes a low floor, making him one of the bigger boom-or-bust prospects in the system.

Gonzales will open the season with High-A Greenville after appearing in just 11 games there last season. The Red Sox have been aggressive the past few seasons with promoting their top players, and should Gonzales avoid any prolonged struggles, he should be able to make it to Double-A Portland before the end of 2026.