The White Sox are sending a loaded group to the Arizona Fall League, and the list gives a pretty clear window into who the organization wants to keep pushing this offseason.
James Fegan of the Chicago Sun-Times reported that the club has finalized its AFL contingent, with pitchers Nick Altermatt, Jonathan Clark, Pierce George, Mathias LaCombe and Garrett Wright set to head to Arizona. Catcher Grant Magill, infielders Anthony DePino and Colby Shelton, and outfielder Caleb Bonemer are also on the roster.
Among that group, the most intriguing arms are Pierce George and Mathias LaCombe. George, ranked No. 19 in the system, is a 6-foot-6, 240-pound reliever with a big fastball and shaky control. He logged 50 games this season, posted a 3.68 ERA, and moved from Low-A to Double-A over the course of 2026.
LaCombe, who checks in at No. 18, has taken a different route but arrived at the same destination: attention. His numbers are modest, but his arm slot creates a lot of whiffs, and since August 2 he has allowed only two earned runs out of the bullpen. If that momentum carries into the Fall League, he could put himself in position for a look next year, with a chance to become the first drafted French-born player in the 21st century to reach the majors.
Altermatt, Clark and Wright are also on the pitching side, though each sits outside the White Sox’s top 30 prospects. They’re part of the rising-reliever pipeline the organization will be tracking in Arizona.
On the position-player side, DePino and Shelton are the names worth circling. DePino, the No. 22 prospect, came from Rhode Island in the seventh round of the 2025 MLB draft and struggled through 29 games in Low-A that year.
He’s turned things around in a big way in 2026, hitting .262/.363/.481 with 25 home runs across High-A and Double-A in 125 games. Though he’s been a first baseman, the White Sox want to give him more reps at third because of his 5-foot-11, 218-pound frame.
Shelton, ranked No. 24, was a sixth-round pick out of Florida in 2025 and followed a similar path. After a slow start, he caught fire this season and has hit .244/.338/.488 with 24 home runs in 127 games between High-A and Double-A. His bat has been the calling card early on, and he profiles as a future second baseman.
Magill, an undrafted catcher, is also in the mix. He’s climbing quickly, but the offense hasn’t made much noise yet, with a .660 OPS since 2025.
And then there’s Bonemer, the biggest name of the group. The White Sox’s No. 2 prospect and No. 29 in baseball, the 2024 second-round pick has exploded this year, batting .251/.380/.550 with 37 home runs and 17 stolen bases. He’ll get that next test in Arizona as an outfielder, after a center-field move was announced a few weeks ago.
Bonemer’s new defensive home hasn’t changed what he’s doing at the plate, and the Fall League will offer a tougher stage to see how that bat plays against top-end competition, along with a look at how he handles the outfield. This should be a Fall League worth following for White Sox fans.
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