Aidan Miller’s health appears to be trending in the right direction after an update from Philadelphia Phillies manager Don Mattingly on Tuesday.
Miller is “beginning to do light baseball activity”, which is a breath of fresh air for fans who have been concerned about his progress. While Mattingly did not get into the specifics of it all, it is a good sign that he is getting back to work after months of uncertainty due to a back injury.
Miller, 21, was the Phillies' first-round selection (27th overall) in the 2023 MLB Draft. He has impressed during his time with the organization, as he is the Phillies’ top prospect in their farm system (and ranked 16th overall in MLB).
In 2025 between Lehigh Valley and Reading, Miller hit 14 home runs to go along with 42 RBI and a .264 average in 116 games. He showed an innate ability to get on base as well, posting a .392 OBP with 82 walks. Despite not possessing blazing speed, he showed a big time ability to swipe bags as he recorded 59 stolen bases in 74 opportunities.
Aidan Miller is the future of the Phillies, so the team must play his injury situation safe
His fielding still needs some work (20 errors last season), but he still has plenty of time to get it right. Overall, in his minor league career, he has hit .265 with a .383 OBP and 104 RBI in 238 games, with most of his action coming at the Double-A level.
Miller figures to be a big contributor for the Phillies going forward, with the future of infielders such as Alec Bohm, Edmundo Sosa, and Bryson Stott in question with all three players approaching free agency over the course of the next two years (Bohm and Sosa in 2027). While he has played solely as a shortstop in the minor leagues, Miller figures to see some action across the infield once he is called up with Trea Turner penciled in for the long haul at his position.
While it is encouraging that he is beginning baseball activity, there is still no timetable for his return to game action. Considering he is still 21 years old, the Phillies are likely to play it safe, similar to the way they did with Andrew Painter following Tommy John surgery.
Once he does return to the field, Miller will be a name to watch once again as he continues his impressive development within the Phillies organization.
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