Scouting Report
Updated May 20, 2026
Juan Valera, 19-year-old Red Sox RHP prospect, underwent Tommy John surgery on April 30, 2026, after suffering a right elbow UCL injury during his third start of the season on April 16. Despite an exceptional start (17 K in 9.1 IP, 1.93 ERA, 101.7 mph fastball), the injury ended his 2026 season. This marks the second consecutive season Valera has suffered an elbow injury, having missed three months in 2025 with elbow soreness. Expected recovery timeline is 12-14 months, likely sidelining him through most of 2027.
Strengths
- + Dominant early season performance (1.93 ERA, 17 K in 9.1 IP)
- + Elite fastball velocity (101.7 mph, upper-90s range)
- + Improved secondary pitches (slider, sweeper, changeup)
- + Recently added to Baseball America Top 100 Prospects list
- + Ranked 4th-5th in Red Sox prospect system
- + High ceiling as mid-rotation starter
- + Successful surgery performed by renowned specialist Dr. Jeffrey Dugas
Weaknesses
- - Tommy John surgery required - 12-14 month recovery timeline
- - Second consecutive season with elbow injury (2025 and 2026)
- - Recurring injury pattern raises durability concerns
- - Will miss majority of 2027 season
- - Young age (19) means lost development time during critical prospect years
- - Reliever risk noted despite high ceiling
- - Significant setback to prospect trajectory
Injury Status: IL-60
About
Jefferson Valladares is a catcher for the Milwaukee Brewers.
Player Overview
C
Milwaukee Brewers