The Philadelphia Phillies have surged since firing Rob Thomson and promoting Don Mattingly to manager. Brandon Marsh is among the league leaders in batting average, Kyle Schwarber leads MLB in home runs, and both Cristopher Sánchez and Zack Wheeler have returned to ace-level form on the mound.
Despite the turnaround, one lingering concern could extend well beyond this season.
Top prospect Aidan Miller has yet to swing a bat this year. Since Spring Training, Miller has been dealing with a mysterious back injury that has kept him completely sidelined.
The uncertainty surrounding Miller has only intensified as third baseman Alec Bohm continues to struggle offensively. Many believed Miller could eventually push for the position this season, but the lack of progress in his recovery has cast doubt on that possibility. While details remain limited, a few updates have shed light on the situation.
Latest Updates
Since Spring Training, Miller’s back issue has prevented him from returning to baseball activities, and little information about its severity has been publicly shared. An update from a Sports Illustrated and The Good Phight contributor revealed that Miller still is not swinging a bat and has not resumed any baseball-related work, per Mattingly.
Additional insight came from MLB.com, where it was explained that Miller had begun taking ground balls and doing rotational exercises a few weeks ago in preparation for swinging again. However, those activities have since stopped. Miller is no longer fielding, no longer training, and appears to have suffered a significant setback. The injury was described as a serious back issue.
If Miller is unable to play at all this season, it would be a major blow to the organization, which views him as a cornerstone player with franchise-altering potential.
Future of the Franchise
The Phillies’ long-term plan at third base remains unsettled, especially with Bohm set to reach free agency after the season. Many expected Miller to take over the position next year, but the uncertainty surrounding his health could force the team to reconsider those plans.
What is not in question is Miller’s upside.
Earlier this year, a former MLB general manager and current MLB Network analyst described Miller as the future of the organization, praising his bat and positional flexibility. Miller has played shortstop but could eventually shift to second or third base.
The analyst also highlighted Miller’s rare mix of speed, discipline, and power, noting his strong base-stealing ability, advanced pitch recognition, and developing pop. Comparisons have been made to elite infielders, with the added benefit of speed and athleticism.
Phillies fans are eager for Miller’s eventual arrival in the majors, but for now, patience remains necessary as his recovery continues.