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Scouting Report
Updated May 19, 2026
Juan Valera, 19-year-old Red Sox RHP prospect, underwent Tommy John surgery on his right elbow on Tuesday after suffering an injury during his third start of the 2026 season on April 16. Initially diagnosed as elbow inflammation, subsequent MRI imaging revealed a UCL tear requiring surgical reconstruction. Valera was off to an exceptional start, posting a 1.93 ERA with 17 strikeouts in 9.1 innings across three starts before the injury. This marks the second consecutive season he has suffered an elbow injury, having missed three months in 2025 with elbow soreness. Recovery typically requires 12-14 months, sidelining him through most of the 2027 season.
Strengths
- + Exceptional pre-injury performance (1.93 ERA, 17 K in 9.1 IP)
- + High velocity fastball (101.7 mph peak)
- + Recently added to Baseball America's Top 100 Prospects list
- + Improved secondary pitches (slider, sweeper, changeup)
- + Ranked 4th-5th prospect in Red Sox system
- + Successful surgery performed by renowned specialist Dr. Jeffrey Dugas
Weaknesses
- - Tommy John surgery required - season-ending injury
- - Second consecutive season with elbow injury (2025 elbow soreness)
- - Recurring injury pattern raises durability concerns
- - Will miss majority of 2027 season during recovery
- - Fastball velocity may be affected post-surgery
- - Reliever risk noted despite high ceiling
- - Young age (19) means extended development timeline
Injury Status: IL-60
About
Juan Then is a sp for the Chicago Cubs.
Player Overview
SP
Chicago Cubs