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Washington Nationals prospect Alejandro Rosario is finally throwing again

Last offseason, the Nats traded MacKenzie Gore in exchange for five prospects. Four of those prospects have already played, and have shown varying levels of promise. However, there was a 5th who had to miss all of last season with…

Published: Saturday, 17 October 2026 at 9:00 PM
Washington Nationals prospect Alejandro Rosario is finally throwing again
Key Things to Know
  • Washington Nationals pitching prospect Alejandro Rosario has resumed throwing on the mound after more than 600 days.
  • Rosario was acquired by the Nationals from the Texas Rangers in the MacKenzie Gore trade.
  • The right-hander missed all of last season due to Tommy John surgery after tearing his UCL.
The Story in 60 Seconds

Washington Nationals pitching prospect Alejandro Rosario announced he is back throwing on the mound for the first time in over 600 days. Rosario was acquired from the Texas Rangers in an offseason trade for MacKenzie Gore, but he missed the entire previous season following delays surrounding his Tommy John surgery.

Rosario originally dominated the lower minor leagues in 2024, posting a 2.24 ERA across 88.1 innings before suffering a torn UCL. Writer Sam Sallick highlights that the Nationals face an upcoming Rule 5 Draft decision regarding Rosario, who retains high upside as either a bullpen arm or future starting pitcher.

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