Trade: Bordeaux: Raphael Collignon vs Tallon Griekspoor

Market context

Raphael Collignon and Tallon Griekspoor were due to meet in Bordeaux on 16 May, with the market now driven by whether the match is played and who advances rather than by any long pre-match certainty. The current 100% implied price can be a function of a thin Polymarket order book as much as true conviction: when liquidity is light, a few bids can pin the displayed probability at the ceiling even though settlement still depends on official completion. On paper, the pairing is relatively straightforward to read: Griekspoor is the higher-ranked ATP player, while Collignon would usually be viewed as the underdog in this level of event.

For context, markets on lower-tier clay matches can reprice quickly around late schedule changes, withdrawals, or live abandonment risk, especially when the contest sits near the start of the European swing and the draw is compressed. The main catalysts are official tournament order-of-play updates, any injury or withdrawal notices, and whether the match starts before the 23 May settlement deadline. Flashscore, SofaScore and ATP-linked match pages all listed the fixture for 16 May, which suggests the key question for resolution is not the identity of the entrants but whether the scheduled bout actually takes place and produces a winner within the window.

Sources: 1 · 2 · 3 · 4 · 5

Resolution source

This market settles from the official outcome published at https://www.atptour.com/en/scores/current. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.

Settlement window & payout timing

For this market, the resolution date is 23 May 2026. A UMA proposer can submit the outcome from that moment; the two-hour dispute window closes at 2026-05-23 16:00 UTC, and assuming no counter-claim is staked, winning USDC clears to trader balances by approximately 2026-05-23 17:00 UTC.

If a dispute is filed inside the two-hour window, the outcome escalates to UMA token-holder voting, which extends settlement by roughly 48 hours. Disputed resolutions are rare — fewer than 0.5% of PolyGram markets in 2026 to date — and even rarer for events with clear, verifiable resolution sources.

Funds clear directly to your in-app USDC balance on Polygon. From there, withdrawals are non-custodial: send to any address you control, typical confirmation under 30 seconds, gas paid in USDC if you'd rather not hold MATIC.

Trading mechanics

Minimum order size on PolyGram is $1.00, with no maximum cap aside from available book depth. Orders route into Polymarket's on-chain CLOB on Polygon; the matching engine pairs YES buyers with NO buyers atomically — every executed trade is settled on-chain with no counterparty risk.

The trade ticket includes a slippage box (default 2%, configurable 0.1%-10%) that caps the worst-case entry price. Your maximum loss is your stake — winning YES (or NO) shares pay $1.00 each at resolution. Your slippage tolerance and the depth of resting limit orders determine the actual fill.

PolyGram charges 0% house edge — no spread mark-up, no rake on winnings, no withdrawal fees beyond network gas. The platform earns exclusively from optional features (copy-trade boosts, advanced order types, the yield vault on idle USDC); the trading surface itself is at-cost.

How to trade this market step by step

The mechanics for trading "Bordeaux: Raphael Collignon vs Tallon Griekspoor" are the same as any other PolyGram event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.

1. Sign in on polygram.ink with your email — no full KYC under $1,500 lifetime trading volume.
2. Deposit USDC on Polygon (lowest fees, ~$0.01 per transaction) or Ethereum. Funds credit after 12 confirmations.
3. Pick a side. Buy YES if you believe the event will happen; buy NO if you think it won't. The current YES price reflects the market's collective probability.
4. Size your position. If you stake 100 USDC at 50% YES, you'll receive shares that pay $200 if YES resolves true — a 100% gross return. If NO resolves, your shares are worth $0.
5. Set risk controls (optional). Stop-loss, take-profit, and limit-order types all supported. Use the trade ticket's slippage box to cap your maximum entry price.
6. Wait for resolution. When the event resolves on-chain via the UMA optimistic oracle, the winning side settles to 100¢ automatically and USDC hits your balance within seconds. Withdrawable to any wallet you control.

How active is this market?

$161K in lifetime turnover and $0 of resting liquidity puts this market in the top 30% by volume for tennis contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.

Last 24 hours alone saw $161K in turnover, well above the lifetime daily-average for this market — a clear sign of news catalysing trader activity right now.

The market has been open for under a month — fresh enough that information asymmetry remains a real factor.

Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.

Key terms

YES / NO share

A binary outcome token that pays $1.00 if the underlying claim resolves true (YES) or false (NO), and $0 otherwise. The market price between 0¢ and 100¢ is the implied probability.

CLOB

Central limit order book. The matching engine that pairs YES buyers with NO buyers (effectively the same trade). Polymarket's CLOB on Polygon executes trades on-chain via the conditional-tokens framework.

Liquidity

USDC capital sitting in resting limit orders inside the order book. Deeper liquidity means smaller slippage on large trades and a tighter bid-ask spread.

UMA optimistic oracle

The on-chain dispute system that settles each Polymarket market. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution.

Slippage

The difference between the displayed mid-price and your fill price. Affects market orders most; limit orders avoid slippage but may take time to fill.

Conditional token

ERC-1155 outcome share issued by Gnosis Conditional Tokens on Polygon. The token type that resolves to $1.00 or $0.00 at settlement.

See the full prediction-market glossary →

Frequently asked questions

Risk and regulatory note

Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.

Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.

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