Know the numbers behind the hype.

A research tool for sports prediction markets. We show how the top Polymarket sports traders actually perform: what they won, what they lost, how much they risked to get there, and whether they hold their bets or sell early.

Yes. Every trade on Polymarket is public, and we pull it straight from Polymarket's public data. We organize it and explain it; we don't make any of it up. Leaderboards refresh every minute or so, though Polymarket's data is occasionally delayed.

No. We don't give picks, tips or predictions. Ball Knowledge is information only. Past results don't predict future ones, and following anyone's bets can lose money.

No. Ball Knowledge never connects to a betting account, never takes bets and never holds your money. If you want, you can link your own public Polymarket wallet so friends can see your moves, but you don't have to.

Not inside the app. Tap “Copy bet” on any bet and pick where to place it: Polymarket opens that exact market, and Kalshi, DraftKings, FanDuel and other apps open with the bet copied so you can paste it into their search. Prices differ between apps, so check the odds first. Polymarket decides who can trade where; in the US, that's the Polymarket US app.

Win rate is the share of a trader's last 100 finished bets that made money. Return is their profit divided by how much they traded in that period, so a big win on a huge amount of betting reads differently from the same win on a small amount. “Held to the end” means they kept the bet until the game was decided; “sold early” means they got out before that. Selling at 98¢ or more counts as holding to the end.

Those traders have won 70% or more of at least 20 finished bets. The free plan hides who they are; Premium shows them and their full records.

Premium is $4.99 a month or $40 a year. It adds full track records, how each trader exits, the hidden 70%+ traders, lock-screen notifications, unlimited tracking (free accounts can track 3 traders) and no sponsored posts. Cancel anytime in Premium → Manage billing, and you keep Premium until the end of the time you've paid for.

Your username is your invite code. Share it from the Friends tab. When a friend creates a new account with it, you both get a free week of Premium. You can earn up to 26 free weeks, and they never turn into a paid subscription on their own.

Lock-screen notifications are a Premium feature, and on iPhone they only work in the Home Screen app (in Safari, tap Share, then Add to Home Screen) on iOS 16.4 or newer, with notifications allowed. In Leaders → Following → Notifications, tap “Check notifications” to see which step is missing.

Yes. We never sell, rent or share your personal information with advertisers, data brokers or anyone else. You can delete your account and everything we store about you anytime in Account → Delete account.

Email [email protected] or message us on Instagram at @useballknowledge.