Marlins Prospects Fighting For A Crucial Extra Development Opportunity

Aiva Arquette, a top MLB prospect, is set to make a significant impact in the Marlins' Arizona Fall League lineup as he returns to action following an injury-shortened season.

The Marlins’ Arizona Fall League group is starting to come into focus, and the name at the top is the one that jumps off the page: Aiva Arquette.

Miami’s prospects will be assigned to the Glendale Desert Dogs when the AFL season opens on October 3, though the full list of players still hasn’t been announced. Fish On First farm director Alex Carver has already confirmed two names, and the expectation is that the Marlins will send seven or eight players total. That number could still shift if injuries hit over the final stretch of the minor league season.

Arquette is the headliner for a reason. A consensus Top 100 MLB prospect, he ranks sixth on the FOF Top 30 and is a rare kind of AFL addition. Most players headed to the desert are there to make up for lost time, and that fits Arquette too: he has played only 49 games in 2026 because of two separate trips to the injured list.

Even with the missed time, the former first-round pick has put together a strong line between High-A Beloit and Double-A Pensacola, hitting .257/.311/.476 with 11 home runs and 14 stolen bases. He has mostly worked at shortstop, while also logging a few games at second base and third base.

Arquette will turn 23 in October, which makes him about one year older than the average AFL batter in recent seasons. The setting is a low-pressure one, but he’ll still be expected to perform.

The other confirmed name is left-hander Emmett Olson, who is currently at High-A. Olson has thrown just 10 innings since coming back from Tommy John surgery, but across parts of four minor league seasons - all with the Marlins - he has posted a 3.62 ERA in 35 games, 33 of them starts, along with solid peripherals.

Olson is expected to work as part of Glendale’s rotation and likely take the ball once a week.

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