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Scouting grades: Fastball: 50 | Curveball: 55 | Slider: 65 | Changeup: 50 | Control: 50 | Overall: 50
Eyanson served UC San Diego as a solid starter for two seasons before electing to transfer to LSU. He showed top-two-rounds potential last summer by working with a 93-97 mph fastball and a hammer curveball while with the U.S. collegiate national team and in the Cape Cod League. His stuff wasn't as sharp early in his junior season but he came on strong in the final two months to rank third in NCAA Division I in wins (12) and strikeouts (152 in 108 innings) and help the Tigers win the College World Series.
Eyanson's slider has become his best pitch during his first season in Baton Rouge, parking at 82-85 mph and eliciting empty swings in and out of the strike zone thanks to its tremendous depth. His upper-70s curveball has been solid but hasn't enticed hitters to chase nearly as much as his slide piece has. His fastball has operated at 92-94 mph and topped out at 98, though its lack of life can make it vulnerable if he doesn't locate it well.
Though Eyanson's low-80s changeup can miss bats with its fade and sink, he struggles to throw it for strikes. He's a good athlete with decent control but will nibble around the plate too much at times. He has a ceiling of a No. 3 starter if he can improve his fastball shape but also could wind up as a reliever who relies heavily on his breaking pitches.
Scouting grades: Fastball: 50 | Curveball: 55 | Slider: 65 | Changeup: 45 | Control: 50 | Overall: 45
Eyanson started slowly at Louisiana State last spring after transferring from UC San Diego, but his stuff and performance picked up in the final two months as he played a key role in the Tigers' national championship. He ranked third in NCAA Division I in both wins (12) and strikeouts (152 in 108 innings), saved LSU's clincher in the NCAA regionals and won the final games in the super regionals and College World Series. The Red Sox managed to slide him down to the third round, where they signed him for a nearly double-slot $1.75 million bonus.
Eyanson's 82-85 mph slider beats up lefties and righties alike with its tremendous depth, and he can use it to get chases or swing and misses in the strike zone. His feel to spin extends to a solid upper-70s curveball with similar downer break. He threw more breaking balls than fastballs last spring, with his heater operating at 92-94 mph and touching 98 but without much life.
While Eyanson's low-80s changeup features fade and sink, he threw it just four times at LSU because he doesn't trust that he can throw it for strikes. He's athletic and fills the strike zone, though his fastball is vulnerable when he doesn't command it, and he'll lapse into nibbling too much around the plate at times. His potential outcomes range from a ceiling of No. 3 starter if he can improve his fastball shape to a floor as a slider-happy reliever.
Scouting grades: Fastball: 50 | Curveball: 55 | Slider: 65 | Changeup: 50 | Control: 50 | Overall: 45
Eyanson served UC San Diego as a solid starter for two seasons before electing to transfer to Louisiana State. His stuff wasn't as sharp early this spring, but he came on strong in the final two months to rank third in NCAA Division I in wins (12) and strikeouts (152 in 108 innings) and help the Tigers win the Men's College World Series. The Red Sox were able to float him down to the third round of the Draft, where they signed him for nearly double slot value at $1.75 million.
Eyanson's slider became his best pitch during his first season in Baton Rouge, parking at 82-85 mph and eliciting empty swings in and out of the strike zone thanks to its tremendous depth. His upper-70s curveball is solid but doesn't entice hitters to chase nearly as much as his slide piece. His fastball operates at 92-94 mph and tops out at 98, though its lack of life can make it vulnerable if he doesn't locate it well.
Though Eyanson's low-80s changeup can miss bats with its fade and sink, he struggles to throw it for strikes. He's a good athlete with decent control but will nibble around the plate too much at times. He has a ceiling of a No. 3 starter if he can improve his fastball shape but also could wind up as a reliever who relies heavily on his breaking pitches.
| Team | Date | Transaction |
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03/05/2026 | RHP Anthony Eyanson assigned to Boston Red Sox Prospects. |
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08/11/2025 | RHP Anthony Eyanson assigned to FCL Red Sox. |
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07/20/2025 | Boston Red Sox signed RHP Anthony Eyanson. |
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06/03/2025 | RHP Anthony Eyanson assigned to College Workout. |
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01/15/2025 | RHP Anthony Eyanson assigned to Louisiana State Tigers. |
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07/05/2024 | Cotuit Kettleers released RHP Anthony Eyanson. |
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04/03/2024 | RHP Anthony Eyanson assigned to Cotuit Kettleers. |
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02/15/2023 | RHP Anthony Eyanson assigned to UC San Diego Tritons. |