Best Ball ADP: Spotting Overvalued and Undervalued Players for an Edge
Average Draft Position tells you where the market values each player. In best ball, where ADP is publicly available before every draft, it’s one of your most important tools — but also one of the most misused.
ADP Edge Identification Table
| ADP situation | What it means | Recommended action |
|---|---|---|
| Player’s ADP is 2–3 rounds earlier than your tier says | Market is overvaluing this player — best-case scenario pricing, name hype, or a big single game | Let him go; another manager will overpay; you avoid losing a premium pick |
| Player’s ADP is 2–3 rounds later than your tier says | Market is undervaluing — negative narrative, unrecognized situation improvement, coaching change not yet priced | Target him; take 1 round earlier than his ADP if you fear he’ll be gone at his price |
| Player’s ADP updated significantly since May | New information changed the market (injury, depth chart news, PFF projection) | Re-evaluate your tier; use the platform’s current ADP, not an old snapshot |
| Two players in the same tier but different ADPs | Market sees them differently; your tier says they’re equivalent | Take the later ADP player; you’re getting the same expected value at a cheaper price |
What ADP Is and Isn’t
ADP is: The consensus market price for a player based on recent draft data. A player with an ADP of 4.08 is typically the 8th pick of the 4th round across recent drafts.
ADP is not: A prescription for where you should pick a player. It’s the market — your job is to beat it.
ADP is not static: It updates continuously through the summer as new information becomes available. An ADP from May might be significantly different by late July.
The Four-Step Pre-Draft Process
Step 1: Get the current ADP. Use ADP from the platform you’re drafting on (Underdog, RealTime Fantasy Sports) or Sleeper ADP as a proxy. Don’t use an ADP that’s weeks old.
Step 2: Build your tier board. For every position, group players into tiers. A tier is a group of players you’d be equally satisfied with — if you’d be equally happy taking Player A or Player B in the 6th round, they’re in the same tier.
Step 3: Identify the gap between your tiers and the ADP. Where does ADP put a player significantly higher than your tier? Let other managers take them — they’ve overpaid. Where does ADP put a player significantly lower than your tier? That’s undervaluation — take them earlier than ADP suggests.
Step 4: Set your “wait until” points. For each target player, know the latest round where they’d still be good value. If a player’s ADP is 8.5 but your tier says he’s a 6th-round player, you’re fine waiting until Round 8. If he’s still there in Round 9, he’s an excellent pick.
Real-Time ADP Decisions During the Draft
Don’t take the first player off your board every pick. If a player you wanted is still available 20% beyond their ADP, he’s slipping — you’re getting value. If your top target was taken 2 rounds earlier than ADP, he went at his floor price; move to your next tier.
Track who’s been taken. After each pick, update your mental model of what’s left at each position. If both of your TE1 targets are gone and you haven’t taken a TE, your plan needs to adjust.
Exploit the gap between your board and others’: If your research says a player is undervalued, don’t wait passively. Take him one round earlier than you’d normally act if you believe others have him ranked similarly.
Platform-Specific ADP Differences
ADP varies by platform. Underdog ADP ≠ ESPN ADP ≠ Sleeper ADP. If you’re drafting on Underdog, use Underdog ADP. Format differences (roster size, scoring) create different valuations — most noticeable for TEs (TE premium vs. standard scoring) and QBs (Superflex vs. 1QB).
For how to build a tier board that works with your ADP analysis, see: How to Prepare for Your Best Ball Draft: A Pre-Draft Checklist. For how positional runs interact with ADP during the draft, see: Best Ball Draft: How to React to Positional Runs (and When to Join Them).