Pirates' Barco Focuses on Pitch Mix Over Spring Training ERA

Developing a new six-pitch arsenal is more important than his Grapefruit League stats for the young lefty.

Mar. 14, 2026 at 10:12am

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Pittsburgh Pirates left-handed pitcher Hunter Barco has spent the offseason adding three new pitches to his repertoire - a sweeper, changeup, and true sinker. This expanded six-pitch mix is a key focus for Barco as he aims to secure a starting role in the Pirates' rotation this season, rather than worrying about his spring training ERA.

Why it matters

Barco's ability to develop an effective new pitch mix is crucial for his long-term success in the majors. While his spring stats may fluctuate, the fact that he is experimenting with and incorporating new offerings shows his commitment to becoming a more well-rounded and dangerous pitcher for the Pirates.

The details

Barco has been utilizing his new sinker pitch second-most to his four-seam fastball this spring, while also mixing in the sweeper and changeup. His Stuff+ metrics are high on the sweeper, though lower on the sinker and changeup. The varied velocities and movements of his six-pitch arsenal should make Barco a more dynamic starter if he can command them effectively.

  • Barco made his MLB debut with the Pirates in September 2025, throwing three scoreless innings over two appearances.
  • Barco made his spring training debut on February 23, 2026, loading the bases but escaping unscathed in 1.1 innings.
  • On March 1, 2026, Barco had an excellent three-inning, three-strikeout outing against the Cardinals.
  • Barco struggled in his most recent start on March 7, 2026, allowing three earned runs against the Tigers.

The players

Hunter Barco

A left-handed pitcher in the Pittsburgh Pirates organization who is focused on developing a new six-pitch mix this spring, including a sweeper, changeup, and true sinker.

Eno Sarris

A writer for The Athletic who named Barco as one of the pitchers showing improved "Stuff" this season, with the Stuff+ model high on Barco's new sweeper pitch.

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What’s next

Barco will look to continue refining his new pitch mix and secure a spot in the Pirates' starting rotation as the team approaches Opening Day.

The takeaway

While Barco's spring training stats may not be eye-popping, his focus on developing a more diverse and effective pitch arsenal is a positive sign for his long-term potential as a starting pitcher for the Pirates.