Red Sox Prospect Harry Blum Joins Arizona Fall League

The 6-foot-7 right-handed pitcher is continuing his development in the Arizona Fall League after a season with Single-A Salem.

Updated on Oct. 30, 2026 in Baseball

Red Sox Prospect Harry Blum Joins Arizona Fall League

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Boston Red Sox minor league pitcher Harry Blum is currently participating in the Arizona Fall League as he builds on his first professional season. The right-hander signed with the organization in February 2026 after stints at Luther College and Augustana University.

Why it matters

Blum is utilizing the Fall League to further develop his skills, including a newly added cutter, after a year spent balancing professional baseball training with personal aspirations like completing a master's degree.

In 66 innings with Single-A Salem, Blum recorded 76 strikeouts while maintaining a .225 batting average against. His development included the integration of a cutter into his repertoire during the 2026 season.

The players

Harry Blum

He is a 6-foot-7 right-handed pitcher who transitioned from collegiate baseball and grocery store employment to the Boston Red Sox minor league system.

Boston Red Sox

This is a professional Major League Baseball organization based in Boston that maintains a farm system of minor league teams.

The details

Standing 6 feet 7 inches tall, the former grocery store employee transitioned from working in St. Paul to professional workouts in Arizona. He previously set a single-season school record at Luther College with 82 strikeouts and maintained a 4.72 ERA with a 9.1 K/9 rate at Augustana University.

Blum completed his fifth season at Luther College in 2024.
Blum pitched for Augustana University in 2025.
Blum signed a professional baseball contract with the Red Sox in February 2026.
Blum began participating in the Arizona Fall League in October 2026.

Season Trajectory

Participation in the Arizona Fall League serves as a critical bridge for prospects to face high-level competition following their minor league campaigns. This experience is essential for refining new pitches and establishing a player's standing for future organizational roster decisions.

Blum's progress in Arizona provides the organization with a deeper look at his potential as a rotation piece or bullpen asset. His ability to limit hitters to a .225 average suggests he is successfully transitioning his collegiate strikeout ability to the professional level.

The takeaway

Blum's journey from a small-college career and grocery store employment to the professional ranks underscores the non-traditional paths many athletes take to reach the major leagues. Success in developmental leagues like the Arizona Fall League often serves as the primary indicator for a player's future potential.