Aidan Miller needs to undergo a back procedure that will essentially end his 2026 season

The Phillies’ top prospect finally has a diagnosis and a plan. Aidan Miller has discogenic pain and facet inflammation in his lumbar spine. He’s undergoing a minimally invasive procedure Friday called a radiofrequency ablation of the facet joints. The goal is to return to game activity in six to eight weeks.

If everything goes perfectly, Aidan Miller plays in August, goes to the Arizona Fall League, and tries to salvage something from a season that was supposed to be his coming-out party.

Aidan Miller will undergo medical procedure on his back

Phillies prospect Aidan Miller to have medical procedure on his back on Friday:

Team says Miller has been diagnosed with discogenic pain and facet inflammation in the lumbar spine.

Miller was seen by spine specialists over the last couple weeks, according to Phillies. Doctors… pic.twitter.com/P3OrtkdXJ6

— Todd Zolecki (@ToddZolecki) June 3, 2026

Miller has not played a single game in 2026. The kid turned 22 on June 9th and has spent every day of his fourth professional season rehabbing a back that won’t cooperate.

He was fully cleared at Spring Training and expected to play in the first Grapefruit League game, then the back flared up again and he’s been on the shelf ever since.

Every time the Phillies got him close to returning, the pain came back. Every time he ramped up to full baseball activities, his body said no.

Three consecutive seasons dealing with back issues for a 22-year-old. That’s a pattern that has to concern everyone in the organization no matter how talented the kid is.

This was supposed to be the year

Aidan Miller came into 2026 with legitimate buzz around a potential midseason callup to the big leagues. He earned it.

Last year between Double-A Reading and Triple-A Lehigh Valley, he slashed .264/.392/.433 with 43 extra-base hits and 59 stolen bases across 116 games. The last two months of 2025 were absurd. An OPS over 1.100 with 22 extra-base hits in his final 36 games. He was demolishing Triple-A pitching and had scouts talking about him as one of the most advanced bats in the minor leagues.

The Procedure Is Supposed to Fix It

Radiofrequency ablation of the facet joints. The Phillies say it’s minimally invasive. Aidan Miller rests for a week after the procedure, then returns to his rehab program. If everything goes according to plan, he’s playing games around August 1st. From there, the Arizona Fall League to get more at-bats and continue developing.

Dombrowski said the procedure “is supposed to fix the issue.” Those are careful words from a careful executive. “Supposed to” is not “will.” It’s optimistic language wrapped in the reality that backs are complicated, unpredictable, and don’t always respond the way doctors expect them to.

The Phillies have had multiple specialists look at Miller over the last few weeks. Dombrowski acknowledged it’s a “very complicated situation” involving multiple muscles and joints.

The organization has not tried to push Miller through the pain. “It’s a youngster with a back, and that’s not the route that we’re choosing or the doctors are choosing. The doctors guide us. We follow what they have to say.”

That’s the right approach. You don’t gamble with a 22-year-old’s spine because you need him for a Wild Card push. You get the procedure done, let him heal properly, and hope the fix holds.

The realistic timeline has Aidan Miller playing minor league rehab games in August, going to the Arizona Fall League in October, and arriving at Spring Training 2027 fully healthy and ready to compete for a big-league job. That’s a full calendar year from now. An entire season lost to a back that has been a problem since 2024.

If by some miracle Miller comes back in August, rakes at Triple-A, and forces his way onto the roster for a September call up, that would be a Hollywood ending to a brutal year. But nobody should be planning for that scenario. The focus is getting him healthy. Everything else is secondary.

Let the body heal. 2027 Spring Training is the target now. The Phillies will figure out the rest without you this year.

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