Philadelphia Phillies prospect Aidan Miller has a chance to make a big impact during spring training.
A key theme of the offseason for the Philadelphia Phillies is their impending youth movement starting in 2026. Justin Crawford is in line to be the team’s starting center fielder come Opening Day, and Andrew Painter could be in the rotation once the season starts, too.
One player who may have been lost in the shuffle with the attention those two prospects is Aidin Miller, and he could be in the story for a big spring training.
Miller was selected by the Phillies in the first round of the 2023 draft, and this is now his second time joining the Phillies major league camp. That familiarity alone could help him feel more comfortable and, in turn, lead to better success on the field and at the plate.
“Last year, I got my feet under me a little bit here, just getting to know everybody. I'll get comfortable over here, but know that I am comfortable here and know everybody a little bit more. I'm excited to come in here and compete,” Miller said.
Feb 25, 2025; Port Charlotte, Florida, USA; Tampa Bay Rays outfielder Chandler Simpson (96) slides safely into second base against Philadelphia Phillies infielder Aidan Miller (81) at Charlotte Sports Park. Mandatory Credit: Kim Klement Neitzel-Imagn ImagesThere’s no question that Miller is ready for the challenge of facing more big-league-level pitching. Plus, the Phillies need to see how much more developing he needs to do in the box before he can be a true option for the big-league club.
Miller ended up recording a .825 OPS with 27 doubles and 14 home runs across Double-A and Triple-A during the 2025 Minor League season.
The 21-year-old is bound to get plenty of opportunities throughout spring for a unique reason: the World Baseball Classic. The Phillies have several players leaving Clearwater to play in the competition, which will open up more playingtime for Miller during Grapefruit League action.
“He's gonna get a lot of plan time with all these guys going to the WBC,” said manager Rob Thomson.
”He looks good right now. He looks good at third base. He's getting plenty of ground balls in both spots. Might get him a little work at second base, but it's gonna be mainly shortstop, third base.”
The talent is there for Miller, and now he’s getting an opportunity, too, setting himself up for a big spring. If the infielder has success in those opportunities, it wouldn’t be surprising if he forced the organization to make some tough decisions early on in the season.
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