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Phillies Arizona Fall League Tracker: Aidan Miller is off to hot start

These Phillies are playing well in the Arizona Fall League.

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The first week of the Arizona Fall League is in the books and the Phillies have nine prospects playing in the premier fall league.

Here's a tracked of how they are doing so far: 

Aidan Miller is mashing

In what was essentially a lost season for the club’s top position prospect due to a back injury which required a procedure called radiofrequency ablation (RFA) of the facet joints in June to address his recurring lower back pain, Miller was able to play the final four regular season games with Double-A Reading while also helping them capture their first Eastern League Championship since 1995.

In seven games with the Fightins’, including the playoffs, he went 7-for-24 (.292) with a .452 on-base percentage, .417 slugging percentage and an .868 OPS. In the championship clinching game, he picked up two hits, including a double, drove in a run and scored three times.

The fact that the highly touted shortstop prospect was able to get some playing time at the end of the season was a good sign for his trajectory moving forward.

He has kept that momentum starting off on fire in the Arizona Fall League, which is a premier league where some of the game’s top prospects go to play for extended work.

Through his first four games with the Suprise Saguaros, the 22-year-old is 6-for-12, (.500) with a ridiculous .700 OBP thanks to seven walks while posting a 1.533 OPS across 20 plate appearances.

Through the first week of the season, Miller leads the league in on-base percentage and sits second in OPS.

While the offensive explosion is certainly important, the fact that he’s doing this while learning a new position is even more pertinent, playing third base as the Phillies are looking to develop him potentially as Alec Bohm’s heir apparent for the big-league roster next season if Trea Turner is not moved off of shortstop next season.

Miller, who originally was scheduled to play in the AFL last season before dealing with his back injury, looks to stay hot at the plate.

Aroon Escobar

The sixth-ranked prospect in the system is not off to the same start that Miller is at the plate in the early stages of the fall season. The infielder is 2-for-12 (.167) through three games with almost half of his at-bats resulting in strikeouts (5).

Escobar had a down season with Reading, hitting .230 with a .679 OPS in 132 games after he built some cache with a strong 2025 campaign where he climbed three rungs of the organizational ladder hitting .270 with a .774 OPS in 120 contests.

Just 21, Escobar has been playing above his expected level at his young age and has time to develop. The Phillies will get an extended look at the second baseman this fall and will have to make a decision on whether or not he makes the 40-man roster ahead of next season to avoid subjecting him to the Rule 5 Draft.

It would be quite surprising if he doesn’t get protected by the team due to his projectability, tools and young age

Dante Nori

Still regarded as a top-10 prospect in the system ranking seventh per MLB Pipeline, like Miller, Nori missed significant time this season, dealing with a stress fracture in his hip. He was limited to 67 games with Reading where he hit .244 with a .318 on-base percentage to go with 21 extra-base hits including 13 doubles, five triples and three homers.

He had a big debut in the AFL going 2-for-5 with a triple, RBI and a run scored, but since then, has only had one other hit over his last 12 at-bats.

Kehden Hettiger

The catcher/first baseman has picked up three hits in 12 at-bats to start his AFL season with two of those hits being doubles. In the small sample size (12 at-bats) he is hitting .250 with a .357 OBP with two walks to his ledger.

The 22-year-old missed time with knee injuries this season, missing the whole month of August before returning to action in September with Reading.

Overall, he hit .191 with a .317 on-base percentage and .348 slugging percentage in 61 games.

Luke Davis

Another catcher, Davis actually is the only Phillies’ farmhand not to play for Surprise. In need of another catcher, Davis is spending the fall season with Scottsdale, which is comprised of prospects from Houston, Milwaukee, San Francisco, Tampa Bay and Detroit.

In his first four games, he is 3-for-9 (.333) to go with three RBI. He also has drawn six walks in 15 plate appearances, boosting his OBP to .600 in the small sample.

Last season was Davis’s second as a pro with the Phillies and played in 46 total games, with 45 in High-A Jersey Shore where he slashed .205/.370/.342 with a .712 OPS. He did show some pop, hitting six doubles, a triple and four homers as part of his 30 hits.

Keegan Batka

Moving to the mound, the righty has made two relief appearances with Surprise and has allowed a pair of earned runs in 1 2/3 innings of work. Of his five outs record, three have been via the punchout.

The 24-year-old made 35 relief appearances across three levels, starting in Clearwater before finishing with Reading. Overall, he posted a 3.14 ERA over 51 2/3 innings with a 1.10 WHIP. He also had some late inning experience, notching seven saves while posting a pretty solid K/BB ratio of 69/17.

Ryan Dromboski

The former Penn Quaker and Ivy League Pitcher of the Year in 2023 turned in a solid AFL debut tossing 3 1/3 scoreless innings of relief, scattering three hits while walking one and striking out a batter.

The undrafted free agent out of South Jersey made 18 starts and one relief appearance between Jersey Shore and Reading. He posted a 5.56 ERA with a 1.44 WHIP while averaging a strikeout per inning with 80 whiffs in 81 innings. He walked 40 batters on the season.

Estibenzon Jimenez

An intriguing arm  you should keep an eye on next season, Jimenez has an electric arsenal and had a fantastic season as a late-inning reliever for Double-A Reading where he posted a 2.38 ERA in 35 outings while notching 16 saves.

In 31 1/2 innings with Reading, he racked up 36 strikeouts while walking just 13 batters. He recorded the final out of the Eastern League Championship as well.

Andrew Walling

The southpaw is using the AFL as a way to log more innings this season after an elbow sprain forced him to be placed on the 60-day IL missing the rest of the season after making 11 appearances out of the bullpen for Triple-A Lehigh Valley.

Walling struggled this season, posting a 9.58 ERA in 10 1/3 innings.

The 26-year-old has made two scoreless appearances for Surprise this fall allowing a pair of hits, a walk and a strikeout.

Kevin Warunek

Warunek made stops at four different levels this season, starting at the Florida Complex League before finishing in Double-A Reading.

While his WHIP as a bit high at 1.48, he posted a respectable 3.48 ERA with 26 strikeouts and 12 walks in 21 innings of work.

The 23-year-old who was drafted by the Phillies in the 18th round in 2024 has allowed two earned runs on three hits in two innings of work this fall.


MORE: Trea Turner's next position is the Phillies' biggest offseason decision


Philadelphia Phillies, Arizona Fall League, Aidan Miller