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Guardians Prospect Alfonsin Rosario: Spring Training Star?
16 Feb
Summary
- Alfonsin Rosario is a 21-year-old outfielder with promising potential.
- He has a minor league slash line of .241/.345/.438 with good defense.
- Spring training offers Rosario a key opportunity to raise his stock.

The Cleveland Guardians are preparing to showcase their non-rostered invites at spring training, with outfielder Alfonsin Rosario expected to draw significant attention. At 21 years old, Rosario has demonstrated considerable promise over his minor league career, achieving a .241/.345/.438 slash line and exhibiting solid defensive skills in center field. His journey with the Guardians began after a trade from the Chicago Cubs, an exchange that underscored the front office's belief in his talent.
Rosario's development has included stops at High-A and Double-A, where he has shown flashes of power and speed despite some adjustments to higher levels of pitching. His profile highlights a high level of bat speed and power potential, though he is noted for an aggressive approach at the plate. Spring training in Arizona will provide an ideal environment for him to refine his skills under experienced coaching and potentially fill a need in center field for the Guardians.
While Rosario is projected to be a few years away from a potential Major League call-up, his performance this spring and in the upcoming 2026 season will be critical. Impressive showings could lead to a promotion to Triple-A by 2027, continuing his ascent through the organizational ranks.




