The 2025 Arizona Fall League season was a very successful one for the Miami Marlins farm system. Four prospects (two hitters and two pitchers) from the organization excelled, and after the way they produced, boosted their stock, and should only continue to rise up the Marlins ranks.
The most notable performance throughout the entire fall league out of the Miami organization came from right-handed pitcher Karson Milbrandt. The Marlins’ No. 18 prospect on MLB Pipeline ranked first among all AFL pitchers with 15.53 strikeouts per nine innings.
Milbrandt’s pitch-mix played very well in the desert. While he struggled to limit walks and hard-hit contact, he cemented the fact that he has some of the best strikeout stuff in all of minor league baseball. He finished second in the AFL with 23 strikeouts.