Top 600 Fantasy Baseball Prospects – 2026 September Update

My Top 600 Prospect Rankings are built for fantasy baseball first and foremost. Use them for dynasty, keeper, and even deep redraft formats, whether you play roto or points. This is the end-of-season update for 2026 and, well, a lot has changed since the preseason rankings dropped.

We’ve already seen major breakouts, surprise promotions, injuries, prospect graduations, and a handful of players completely change the way they’re viewed by the fantasy community. Eric Hartman, Anthony Eyanson, and Devin Fitz-Gerald are just a few examples of prospects who have significantly boosted their stock over the first few months of the season. Some of the biggest movers on this list aren’t necessarily the players with the loudest stat lines either. Underlying skill growth, improved tools, opportunity, and long-term fantasy upside all play a role in where players land.

Anyway, once you get outside the top 150-200 players, the differences between players become much smaller than most people realize. You’re often weighing ceiling versus risk, proximity versus upside, age to level, or trying to decide which skill set is more likely to translate into fantasy production. That’s why you’ll probably disagree with some spots on the list, and that’s okay. These rankings reflect how I value prospects today, knowing full well the landscape can look very different a month from now.

What Factors Into These Rankings?

These rankings are built on the following principles:

• Fantasy Focused: Players are ranked based on their projected fantasy value. Defense only matters if it impacts playing time or eligibility.
• Criteria: Key factors include stats, Statcast data, park factors, injury history, and future team context. Rankings reflect a snapshot of a player’s projected future value.
• Position Eligibility: Players are listed at positions they have played in the minors, as with many prospects this can change based on where they might play in the Big Leagues.
• Upside Matters: High-ceiling players get a boost over “safe” prospects, though proximity to the majors is also factored in.
• Your Team, Your Vision: These rankings are a guide, not a rulebook. Use them to inform your decisions, but draft and trade based on your strategy and league format.
• FYPD = First Year Player Draft. This was added into the table to show were newly drafted and added players rank among all prospects for future FYPD drafts.

Qualifications: 150 MLB AB or less, 50 MLB IP or less, 45 days or less on the active roster

When Will These Rankings Be Updated?

This is the first in-season Top 600 update of 2026. I’ll revisit the rankings shortly after the MLB Draft once the 2026 draft class has been fully evaluated and incorporated into both the Top 600 and FYPD rankings. After that, expect one final update following the season as we sort through Arizona Fall League performances, prospect graduations, and offseason movement. As always, prospect values move quickly, and staying ahead of those shifts is how you win long-term.

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Top 600 Fantasy Baseball Prospects for Dynasty Leagues