Kevin's updated top 100 fantasy baseball prospect rankings for MLB prospects yet to debut in the majors. His September 2025 dynasty prospect rankings for fantasy baseball.

It's time for another update to my dynasty fantasy baseball prospect rankings for September of the 2025 season. Since the last prospect rankings, we've had quite a few call-ups in the Top 100. This is because rosters have expanded in September and prospects can make their debuts while keeping their rookie eligibility for next season.

This fantasy baseball prospect rankings list will only have non-debuted prospects. I'm also re-sharing some of my general prospect ranking philosophies for those who are new to my rankings.

Upside over proximity: the best prospects are often closer to the majors than they seem, and the lo

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