The Arizona Fall League is giving the Marlins a closer look at eight of their prospects, and for three of them, the next few weeks could matter a lot.
Miami sent eight minor leaguers to the Glendale Desert Dogs, using the AFL as another stage to evaluate young talent in game action against other promising players. For some, that means making up development time lost to injuries. For others, it means another chance to prove they’re moving in the right direction toward the Majors.
Among that group, three names stand out.
Lewis may have the most riding on this assignment. Acquired from the New York Yankees in January in the Ryan Weathers trade, he put together a strong season at Double-A Pensacola before a fractured hamate bone stalled everything. In 89 games, he hit .242/.302/.460 with 18 home runs and 20 stolen bases, showing the kind of power-speed blend that gets attention.
Then the injury hit, and he spent about two months on the shelf. When he came back, the power took time to return, though his final at-bat of the season offered a clean ending: a home run. Lewis is now Miami’s No. 11 prospect according to MLB Pipeline, and the AFL gives him a chance to reinforce the two things the organization wants to see most: that he’s healthy, and that the bat is back.
Max Williams arrives in Arizona with a different kind of momentum. He missed the start of the 2026 season after surgery on his torn labrum in his left shoulder, but once he got on the field in July, he made it count. The organization’s No. 27 prospect hit .326 with a .399 on-base percentage and .610 slugging percentage across three minor league levels, adding 15 home runs and 37 RBI in a shortened season.
That kind of production earns a longer look. Williams was moved to Double-A Pensacola with nine games left in the season, and now he gets a fresh test against more advanced pitching. The AFL will tell Miami plenty about whether his numbers can hold up when the competition gets sharper.
Johnson is in a different spot entirely. Instead of trying to extend a breakout, he’s trying to find one. Since being drafted in the 2024 MLB Draft, he has hit just .211 in the minors, and the transition to pro ball has not come easily.
Still, 2026 brought some signs of progress. He finished with 25 doubles and 14 home runs across two levels, including 50 games with High-A Beloit.
That extra-base production suggests he may be growing beyond a profile built only on contact. The AFL now gives him a chance to prove that those gains weren’t a blip.
If he can put together consistent at-bats, it would mark a real step forward.
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