Red Sox 2025 Draft Review: Anthony Eyanson's Updated Scouting Profile One Year Later

[Nick John]

Anthony Eyanson quickly vaulted his way up the prospect rankings thanks to a dominant first half of pitching that was split between High-A Greenville and Double-A Portland, making him TalkSox’s number two prospect on our latest Top 20 ranking. While the major-league club has struggled to play consistent baseball, the sight of young prospects flourishing has been a great sign for the future, especially on the pitching side. Today, we’ll break down what makes Eyanson such an exciting prospect and how his development may be causing other teams to wish they had grabbed him.

Anthony Eyanson’s Updated Red Sox Scouting Report

Eyanson, who pitched his first two seasons of college baseball at UC San Diego, transferred to LSU prior to the 2025 season where he became the team’s Saturday starter behind teammate and 2025 third overall pick Kade Anderson. The right-hander would quickly become one of the best pitchers in college baseball that year, going 12-2 with two saves as he appeared in 20 games and made 18 starts. Over that span he tossed 108 innings and struck out 152 batters, allowing him to finish third in Division I for strikeouts trailing Anderson and fifth overall pick Liam Doyle. This was in part thanks to an increase in velocity, as his fastball sat at 93 mph and would occasionally hit 96-98 mph.

Entering the draft, he was viewed as a likely top-50 prospect, but then he fell all the way down to the third round, where the Sox wisely scooped him up.

Entering spring training, Eyanson measured 6-foot-2 and weighed 210 pounds with an athletic frame that has a sturdy lower half and possible room to grow for his upper body. He showcased some great stuff during his live bullpen sessions against hitters. During the beginning of the spring, he was hitting high-90s on his fastball and in the Spring Breakout game, hit triple digits.

After opening the season with High-A Greenville, Eyanson was promoted to Double-A after just five dominant starts. Overall he tossed 20 1/3 innings and allowed one run on seven hits and three walks. The lone run was on a solo home run in his professional debut. In that same span, he struck out 34 batters. Since joining Portland, he’s made seven starts and tossed 35 1/3 innings. During that span, he’s allowed seven earned runs on 21 hits and 17 walks while striking out 37 batters, despite being four years younger than the average player for that level.

Overall, he's 3-0 with a 1.29 ERA across 12 starts (13 appearances) between Portland and Greenville.

Mechanics

Unlike most pitchers today, Eyanson throws from a high three-quarters arm slot standing on the first base side of the rubber. A high leg kick is followed by a long arm swing behind his head, before a quick forward motion with a high release. He manages to repeat his mechanics and has no restrictions to his arm or shoulder. He showcases a plus extension that allows his fastball to play better. His release point is higher than 94% of pitchers, leading to his pitches approaching the zone at a steeper-than-average angle.

Fastball

Entering spring training, his fastball sat 95-98 and topped out at triple digits after sitting 92-94 mph in college. The increase in velocity held to begin the season, but since joining Portland it has been sitting 93-95 mph. Pitch has a below-average spin rate compared to other fastballs due to his release point but has good movement. His fastball has lost some arm-side movement, but Eyanson has replaced it with increased vertical break, making it tough to square up. He's got plus command and control with the pitch as he throws a ton of strikes. Odds are, he'll struggle to miss bats with it at the higher levels.

Potential plus pitch: 60 grade on 20-80 scale

Slider

The slider might be his best pitch when all is said and done. Sitting 86-89 mph, it has more vertical movement than horizontal like the fastball due to his release point. Spin rate is below-average as well, but misses bats thanks to the release point. Will miss the zone more than with his fastball, but thanks to the movement, he’s able to generate chase and whiffs with it. During his time in High-A, the pitch had a 67% whiff rate to go along with a chase rate of 50% and currently has a 40% chase rate on the entire season.

Potential plus pitch: 65 grade on 20-80 scale

Curveball

Eyanson’s curveball looked great during the Spring Breakout game, as it showed a 12-to-6 shape with vertical depth and some glove-side movement. The pitch sits between 80 and 83 mph. The right-hander can use it competitively in at-bats and has made it look better while playing off the rest of his pitch mix. He'll use it more often against left-handed hitters instead of right-handed hitters.

Potential above-average pitch: 55 grade on 20-80 scale

Splitter

Sometimes viewed as a changeup, Eyanson’s splitter has been able to generate whiffs despite looking similar to his slider in movement. Described as having a “bullet” shape to it, the pitch is slower than his slider on average but has sometimes hit between 87 and 89 mph. Extremely low spin rate, but due to the shape of the pitch and vertical movement thanks to his release height, it is hard to square up and has a chase rate of over 40%. It seems to be the least consistent of his pitches so far.

Potential below-average to slightly-average pitch: 40-45 grade on 20-80 scale

Cutter

The cutter is Eyanson’s newest pitch and one he has been working on with the Red Sox throughout the season. The pitch, meant to pair with his fastball, has sat between 89 to 91 mog. Shows both glove side horizontal movement and vertical drop and at times can look similar to his slider.

Potential average pitch: 50 on 20-80 scale

Outlook with Red Sox

Eyanson has a chance to become something special should hitters continue to struggle with the higher release height and the way his pitches break. Should the velocity gains be for real and not just a short flash at the start of each season, Eyanson could be a middle-of-the-rotation starter with the potential to be a number two in a future rotation. His floor is that of a number five starter or great reliever. He has great control and currently has three pitches that have plus potential. As a hard worker and competitive player, Eyanson seems like the type of individual who will continue to improve with each stop on the minor league level.

2026 Final Prediction

The thought of Eyanson repeating Payton Tolle and moving his way through the minor leagues and pitching in Boston all in one year is fascinating, but I don’t think that will be the case. Tolle’s rapid ascent through the minors could be repeated, but his promotion to Boston was due to a need of pitching and right now, it doesn’t seem that a similar situation is going to occur barring a surprise trade or huge injury. Despite that, it shouldn’t be a surprise when Eyanson gets promoted to Triple-A at some point, most likely in August.

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[JoeBrady]

Outstanding write-up.  Thanks.