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Phillies Prospect Aidan Miller Still Sidelined by Back Tightness, Says He’s Improving

The club has set no return timetable, reflecting a cautious approach to a player expected to get multi-position spring reps once cleared.

Overview

  • He has not appeared in Grapefruit League games and has mostly worked in the training room since reporting a sore lower back.
  • Miller said the issue was not caused by a single play, describing waking up with a “super tight” back and noting the tightness is easing as he builds back.
  • The Phillies have declined to project a return date and emphasize they will not rush him, making an Opening Day roster spot unlikely.
  • He experienced similar soreness late last season and skipped the Arizona Fall League after team officials cited nagging physical issues.
  • Plans call for reps at third base, second base and shortstop when healthy to position the top prospect for a possible midseason call-up after a strong 2025 in Double A and Triple A.