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Miguel Sime Jr. exceeded expectations in his first season in the Washington Nationals system

The Nats had a lot of prospects take meaningful strides in 2026, but the one I want to talk about today is Miguel Sime. When the Nats took Sime in the 4th round of the 2025 draft, he was a…

Published: Friday, 23 October 2026 at 7:35 PM
Miguel Sime Jr. exceeded expectations in his first season in the Washington Nationals system
Key Things to Know
  • Sam Sallick argues that Nationals prospect Miguel Sime Jr. exceeded expectations during his first professional season.
  • Sime developed a go-to slider to complement his triple-digit fastball, driving an overall 41.3% strikeout rate.
  • Following a mid-season promotion to High-A Wilmington, Sime recorded a 2.15 ERA across 46 innings.
The Story in 60 Seconds

Federal Baseball's Sam Sallick argues that Washington Nationals pitching prospect Miguel Sime Jr. exceeded expectations during his first professional season in 2026. A fourth-round draft pick in 2025, the 19-year-old displayed dominant stuff, highlighted by a triple-digit fastball and a newly developed slider that helped him generate a 41.3% strikeout rate on the year.

Sime earned a mid-season promotion to High-A Wilmington, where he posted a 2.15 ERA and 76 strikeouts over 46 innings. While Sallick notes that persistent control issues and high walk rates create long-term bullpen risk, he believes Sime's elite pitch mix gives him substantial upside.

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