US Open 2026 Every match on the graded money board, sealed at first serve.Open it → Polymarket · ATP and WTA

See which side the winning money is on.

Every Polymarket position is a public wallet. We grade them nightly on ATP and WTA results, and show you where the proven money sits before first serve.

Open today's board Join · $7.77 a month
71,873wallets swept
2,157graded records
5,085matches graded

See it in action

1 Pick any match. Live scores, prices, and a read on every row.
gutcheck.bet/dash
de Minaur vs. TsitsipasLIVE$82k
Norrie vs. Kovacevic10:30 PM$74k
Fils vs. Jodar1:30 PM$51k
🎯 Graded sharpsTsitsipas63%
🏆 Top-300 moneyTsitsipas78%
🐋 Crowd moneyde Minaur52%
🏦 Sharp booksde Minaur57 / 43 no-vig · Pinnacle + Novig
Your gut says:
Tsitsipasde Minaur
Records split. Wallets in profit lean your way. The money in the red is on the other side. That is the shape we flag.
$3.5k on Moutet · riverskew🔥 5 straight in tennis🎯 graded
$18.5k on Norrie · 0x9243…658e🎯 graded winnerentered 4h ago
$11.3k on Shapovalov · 0x076d…8d4c⚠ losing recordentered 1h ago
Click any wallet · full record, computed livePolymarketscan ↗
🎾 Tennis58% win · 266 mkts+$97k
⚾ Baseball46% win · 114 mkts-$27.5k
✅ Your side · ✅ Winning-record money with you · ✅ Losing-record money against you · ⚠️ Books lean the other way
Your edge: Tsitsipas42c (+138)
Every input on one screen. The read is yours, now it is an informed one.

How it works

Winning-record money on one side
Losing-record money on the other
That is the shape we flag, every night, on every match on the board. Whether it has been worth betting is a separate question and the track record page answers it in full.
Public wallets, not a "68% of bets" graphic
Real size, real entry price, real history. On-chain, and checkable by hand.
Graded on tennis only
A soccer whale is not a tennis read. ATP and WTA results, nothing else.
Walk-forward, so no hindsight
A wallet's grade for a match uses only matches that finished before it.
Two wallets minimum, never one
One lonely account is an opinion. We call that thin and say so.
Size is not an edge
Copying the single biggest position has run at +2.6 percent across 1,497 graded markets, and the honest range still crosses zero. Size tells you how much someone bet. It never tells you whether they have been right.

How 71,873 wallets becomes 2,157

Wallets we pull history for 71,873
Took a position before a match we grade 71,873
Put at least $500 on one 7,038
Did that on 4 matches or more 2,157
Two rules do the filtering. Under $500 is not a real position, and fewer than 4 matches is not a record. We sweep wide and grade narrow.

What you get

Private Telegram channel
The ping when a signal locks. Before the match, never after.
The daily card
Tonight's board, read for you before first serve. Scored publicly the next morning.
Event manuals
Venue, conditions, and where the graded money showed up last time. US Open next.
The full dashboard
Every match report, wallet and entry price. Visitors get one report a day, members get them all.
Receipts culture
Everything we call is scored in public. The losses stay up.

Receipts, including the ones that hurt

Posted on @GutCheckBet before the match, scored either way. Full numbers on the track record page.

Tsitsipas +138 (Gstaad opener) · posted pre-match with the altitude read ✓ won
Van Assche +138 (Estoril final) · money in profit on the underdog, posted pre-match ✓ won
Whale copying · the most tempting signal on any board · tested across 1,497 graded markets, worth +2.6 percent ✓ published
Founding membership
$7.77 / month
First 77 members, locked for life. $35 after that. Cancel anytime.
Private Telegram channel
The daily card, every slate day
Event manuals before they go public
Claim a founding spot

Questions

Is this a picks service?
No. We show you where graded money is positioned and what its record is. What you do with that is yours. When there is no read, the site says there is no read.
Where does the data come from?
Polymarket's public on-chain records, plus sharp sportsbook reference lines and exchange no-vig prices. Every position, entry price, and settled result is independently checkable. We read it, we cannot edit it.
Why should I trust the grades?
You do not have to. Every grade is built from public resolved markets, walk-forward, and any wallet's history can be checked by hand. The grades are receipts, not claims.
What happens if an edge disappears?
We never sold you one. We sell speed and legibility on public money, and we publish what every pattern is worth even when the answer is nothing. The regrade runs nightly, so when a pattern dies the page says so on its own.
Who is this not for?
Anyone who wants locks, guaranteed units, or someone to think for them. We publish it when our own patterns are worth nothing. That will annoy you.
Can I just use the free board?
Yes, genuinely. The board is free and stays free, with one full match report a day. Members get every report, the daily card, the Telegram ping before first serve, and the manuals.

The board is free. The reads are $7.77.

Claim a founding spot

Open today's free board

Request your invite

Membership is invite-only while we onboard. Drop your email and we'll DM your invite from @GutCheckBet, usually within a day.

Prefer to reach out yourself? DM @GutCheckBet