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Best Ball Overlay (BBO)

Best ball portfolio web app plus a paid in-draft overlay with CLV tracking

Best ball toolContest analysis
Visit Best Ball Overlay (BBO)(opens in a new tab)Free, or $40/mo

About Best Ball Overlay (BBO)

Best Ball Overlay is a web app with a companion Chrome extension, focused mainly on Underdog drafts. The free tier lets you import Underdog draft CSVs to see exposure, player pairings and closing line value (CLV). The paid tier adds the extension, which syncs your portfolio live during drafts. It also shows historical advance rates and similar teams for a given build.

Features

  • Underdog CSV portfolio import
  • Player exposure and pairing analysis
  • Closing line value (CLV) tracking
  • Historical advancement by build
  • 7- and 30-day ADP movement
  • Live in-draft sync via Chrome extension (Pro)

Sports and sites covered

Sports

Works with

  • Underdog
  • DraftKings

Pricing

Free, or $40/mo

Free web tier (Underdog CSV import); Pro adds the Chrome extension at $40/month or $370/year, shown on the in-app account page

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

Compare Best Ball Overlay (BBO)

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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 Best Ball Overlay (BBO) has changed, let us know.