Scouting Report: Aidan Miller

Summary

Aidan Miller, 21-year-old top Phillies prospect and shortstop, has been sidelined with a persistent lower-back injury since late 2025. After initially progressing through fielding drills in April 2026, he suffered a setback and was shut down from all baseball activities as of May 8. The exact nature of the injury remains unclear, with the Phillies declining to provide detailed diagnosis. Miller has not yet swung a bat or appeared in any games this season. Phillies management is taking an extremely cautious approach to his recovery with no clear timetable for return. His prospect value is diminishing due to prolonged absence and lack of progress.