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The Orioles acquired Eyanson, right-hander Kyson Witherspoon, outfielder Enddy Azocar, catcher Carlos Narvaez and a player to be named later from the Red Sox on Monday in exchange for catchers Adley Rutschman, Jake Rogers and cash, Jake Rill of MLB.com reports.
Narvaez is the only big-league player headed back to Baltimore, while the trio of Eyanson, Witherspoon and Azocar were three of the top-rated prospects in the Boston farm system. Eyanson headed into 2026 will limited fanfare, but the 22-year-old righty has shot up prospect lists after displaying an uptick in velocity during his first season of professional ball and elite results to match it. Between 16 appearances (15 starts) at High-A Greenville and Double-A Portland spanning 68.1 innings, Eyanson has submitted a 1.32 ERA, 0.89 WHIP and 26.5 K-BB%. He'll likely report to Double-A Chesapeake with his new organization, and with a strong finish to the campaign, he should set himself up for an early-2027 MLB debut.
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Red Sox's Anthony Eyanson: Dazzles for Portland
Rotowire
Eyanson allowed one hit and one walk while striking out eight over five scoreless innings for Double-A Portland on Saturday.
Eyanson, who picked up the win in the MLB All-Star Futures Game last Sunday, made his first regular-season start since July 4. It was the ninth start in which he hasn't allowed an earned run and his third with at least eight strikeouts. The 21-year-old right-hander lowered his ERA to 1.19. Eyanson's mainly attacking hitters with a four-seam fastball, an offering that's increased from low-90s mph in college to high-90s and has touched 100 mph in the pros, while mixing in a curveball and a 65-grade slider.
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Red Sox's Anthony Eyanson: Moving up to Double-A
Rotowire
The Red Sox promoted Eyanson from High-A Greenville to Double-A Portland on Sunday, Ari Alexander of 7 News Boston reports.
Eyanson will make the leap to the Double-A level after dominating to the tune of a 0.44 ERA, 0.50 WHIP and 34:3 K:BB in 20.1 innings spanning five starts with Greenville to open the season. The No. 87 overall pick in the 2025 First-Year Player Draft, Eyanson, 21, is quickly establishing himself as one of the top pitching prospects in the Red Sox organization.
Red Sox's Anthony Eyanson: Dominant start at Greenville
Rotowire
Eyanson did not allow a hit and struck out seven over 4.1 scoreless innings for High-A Greenville on Saturday.
Eyanson was brilliant in his second pro start, setting down all 13 batters he faced. The 21-year-old right-hander has allowed one run and three hits while recording 13 strikeouts over 7.1 innings (16.5 K/9) to begin the year. Since being drafted out of LSU in 2025, Eyanson's fastball velocity has increased, per Brendan Samson of MLB.com. After averaging 92-94 mph in college, one of his four-seamers touched 100.2 mph during the Spring Breakout game in March.
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