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Draft Brain

Draft overlay for Underdog/DraftKings NFL best ball, plus PGA and MLB tools

Best ball tool
Visit Draft Brain(opens in a new tab)Free, or $5/mo

About Draft Brain

Draft Brain makes sport-specific Chrome overlays. The NFL version works on Underdog and DraftKings best ball, and the PGA and MLB versions work on Underdog. The NFL overlay shows ownership across your saved teams, color-codes QB stacks, flags frequent player combos and marks playoff matchups, while the golf and baseball versions focus on catching duplicate lineups and showing exposure.

Features

  • Ownership % badges (tournament vs overall)
  • QB stack detection for up to four QBs
  • Combo partner badges
  • Weeks 15-17 playoff matchup badges
  • Duplicate lineup detection (PGA/MLB)
  • Portfolio analyzer and post-draft ADP value

Sports and sites covered

Works with

  • Underdog
  • DraftKings

Pricing

Free, or $5/mo

Free up to 20 saved teams; NFL Pro $10/mo or $100/yr; PGA/MLB Pro $5/mo or $50/yr

Prices as listed on draftbrains.com when we checked. Confirm current pricing on their site.

Compare Draft Brain

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Compare all alternatives

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  • Best Ball Overlay (BBO)

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  • LegUp Sidekick

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  • rosterOS

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Sources and corrections

Last checked Oct 3, 2026. We build every listing from the sources below and recheck them regularly. If something about Draft Brain has changed, let us know.