Alejandro Rosario

22-Year-Old PitcherP
Texas Rangers AA
2025 Fantasy Outlook
A fifth-round selection in 2023 out of Miami, Rosario has big-time stuff, but his 7.11 ERA and 1.63 WHIP as a junior led to him sliding to the fifth round. The Rangers gave him a comfy assignment to the lowest full-season level of the minors, and Rosario dominated, logging a 2.11 ERA, 0.87 WHIP and a 69:5 K:BB in 47 innings across 10 starts. It was more of the same at High-A, with the 6-foot-1 righty logging a 2.40 ERA, 0.99 WHIP and 31.9 K-BB% in 41.1 innings. His mid-90s fastball touches 100 mph, and he uses it to generate groundballs down in the zone but can also dial it up for strikeouts. Rosario has one of the better splitters in the minors - a dastardly 88-92 mph offering - as well as an above-average sweeper. The biggest development in 2024 was Rosario logging walk rates below five percent at both stops while throwing a career-high 88.1 innings. He'll open the year in the upper levels of the minors, and while he may spend the whole year on the farm, Rosario is talented enough to force the issue in the middle of the summer. He is one of the best pitching prospects in the game. Read Past Outlooks
RANKS
From Preseason
$Signed a $437,900 contract with the Rangers in July of 2023.
Promoted to Double-A
PTexas Rangers  AA
September 3, 2024
The Rangers promoted Rosario from High-A Hickory to Double-A Frisco on Tuesday, Kennedi Landry of MLB.com reports.
ANALYSIS
Rosario earned the promotion after collecting a 2.24 ERA and 129:13 K:BB over 88.1 innings between Single-A Down East and Hickory. The 22-year-old has emerged as one of the best pitching prospects in the Rangers' farm system.
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More Fantasy News
Bumped up to High-A
PTexas Rangers  AA
June 28, 2024
Rosario was promoted from Single-A Down East to High-A Hickory on Tuesday.
ANALYSIS
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Scooped up by Rangers
PTexas Rangers  AA
July 10, 2023
The Rangers have selected Rosario with the 144th overall pick in the 2023 First-Year Player Draft.
ANALYSIS
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Latest Fantasy Rumors
Could debut in 2025
PTexas Rangers  AA
October 12, 2024
Rosario could be a factor in the Rangers' starting rotation in 2025, reports Evan Grant of The Dallas Morning News.
ANALYSIS
The 22-year-old was named Texas' minor-league pitcher of the year as he switched from using a two-seam fastball to a four-seam fastball. Rosario posted a 2.24 ERA with 129 strikeouts over 88.1 innings between the Single-A and High-A levels in 2024, so he'll likely need to get in some innings in the upper minors early next season before being seriously considered as a rotation option by the Rangers.
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