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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.
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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