The Arizona Fall League offered a useful late look at a few players whose 2026 seasons were interrupted, uneven or simply hard to place. For the Phillies, the biggest comfort came from seeing Aidan Miller move freely again after a back injury took away nearly all of his year.
Miller returned near the close of the regular season and helped Reading capture the Eastern League championship before heading to Arizona. In limited Fall League action, he went 7-for-14 with three extra-base hits, including a triple, and added a stolen base without any apparent restriction.
The bat has carried to all fields, and Miller has produced solid exit velocity while doing it. Just as important for Philadelphia, he has played third base regularly and looked smooth at the position after developing into a capable shortstop earlier in his career.
If the back stays quiet through the winter, Miller appears positioned to resume the trajectory that was expected from him this season. His route to the Phillies’ lineup could become much clearer in 2027.
Quick facts
- Aidan Miller is 7-for-14 in the Arizona Fall League with three extra-base hits and one stolen base.
- A White Sox sixth-round pick in 2025 hit 24 home runs between High-A and Double-A during his first full season.
- Giants prospect Luis Hernández is the highest-ranked 17-year-old international prospect, sitting No. 25 on the Top 100 list.
- Rockies second-rounder Reddemann is working back from a flexor strain after a 18-strikeout outing for UCLA in April.
The White Sox have a different kind of evaluation on their hands with their 2025 sixth-round selection. His college track record swung from freshman power at Alabama to a strikeout-heavy, power-producing sophomore season at Florida, then to a junior year built more on batting average than pop.
His first full professional campaign leaned toward the power-and-miss version. He batted .244 and hit 24 homers across High-A and Double-A, striking out 23.2 percent of the time overall and 24.8 percent after reaching Double-A.
He opened his Fall League stay 4-for-23 through eight games, though one of those hits was a long home run. A grand slam was wiped from the record when rain intervened, but the raw left-handed power has been evident.
Defensively, the White Sox have moved him throughout the infield and added first base to his Fall League workload. That versatility gives him a plausible future as a super-utility player, while the higher-end outcome is a power-first second baseman capable of around 25 homers along with plenty of strikeouts.
Among the youngest players in the system picture, Hernández stands out as the clear No. 1 among 17-year-olds. The Giants prospect already holds the No. 25 spot on the Top 100, putting him ahead of a tightly grouped next tier.
Phillies outfielder Francisco Renteria, ranked No. 73, and Royals outfielder Angeibel Gomez, at No. 76, make a strong case for the next two spots in either order. Gomez has handled the Arizona Fall League well despite his age, adding another encouraging look to his résumé.
Astros infielder Albert Fermín and Athletics shortstop Johenssy Colome also belong in that conversation, although Colome turned 18 on Thursday. Angels first-round pick Jared Grindlinger, selected in July, has a case for the fourth or fifth spot among the remaining 17-year-olds, while Rocco Maniscalco remains a player to watch before forcing his way into that group.
Colorado’s Reddemann may have the widest range of possible outcomes. During his junior season at UCLA, he pushed himself into the middle of first-round discussions, highlighted by an 18-strikeout performance against Rutgers in April.
Then came the shutdown. A flexor strain ended his season immediately after that Rutgers start, though he threw bullpen sessions both at UCLA and at the Draft Combine before the Rockies selected him in the second round.
The assignment now is straightforward: stay on the mound. Reddemann’s velocity jump before the 2026 season followed an offseason strength program, but he still must show that the improved stuff holds over a full professional workload after two earlier college seasons at San Diego.
If the arm responds, Spokane could be his opening stop, with Hartford a realistic destination later in the season. A healthy run with the same stuff he showed at UCLA would quickly put Top 100 consideration in play.
