Roland Garros WTA: Antonia Ruzic vs Madison Keys — Match Prediction & Odds

Market context

Antonia Ruzic and Madison Keys are scheduled to meet in the first round of Roland Garros on 28 May 2026. The current order book on Polymarket shows zero volume at any price, with the crowd-implied probability sitting at 0% YES, indicating no meaningful market activity has formed around this matchup. This absence of trading interest is typical for early-stage tennis markets where neither player has yet arrived in Paris and the draw remains months away.

Keys, ranked in the top 20 globally, represents the substantial favourite on paper. She has reached Roland Garros quarter-finals twice (2018, 2022) and maintains a consistent record on clay. Ruzic, a lower-ranked player, has limited WTA main-draw experience at Grand Slams. Historical precedent suggests markets in similar first-round matchups between seeded and unseeded players typically price the higher-ranked competitor at 65–80% probability, though actual outcomes vary considerably with surface preference and recent form.

Traders should monitor the official Roland Garros draw announcement, expected in late May, which will confirm seeding and bracket position. Keys's injury status and clay-court preparation in the weeks preceding the tournament will be material—her 2025 season performance and any spring clay results will signal her condition. Ruzic's qualifying path or direct entry status may also shift market expectations. The settlement window closes 4 June 2026, allowing only a narrow window for trading after the draw is known but before the match commences.

Resolution source

This market settles from the official outcome published at https://www.wtatennis.com/scores. 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 4 June 2026. A UMA proposer can submit the outcome from that moment; the two-hour dispute window closes at 2026-06-04 11:00 UTC, and assuming no counter-claim is staked, winning USDC clears to trader balances by approximately 2026-06-04 12:00 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. Because this market resolves from a publicly verifiable feed (https://www.wtatennis.com/scores), the probability of dispute is materially lower than the overall 0.5% PolyGram baseline — most disputes occur on markets with ambiguous wording or non-public resolution sources.

Withdrawal pace from your PolyGram balance is non-custodial and immediate — once payout clears, funds are yours to send to any Polygon wallet you control. Funds clear directly to your in-app USDC balance on Polygon. 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. For "Roland Garros WTA: Antonia Ruzic vs Madison Keys", order-book behaviour for this market reflects the underlying volatility of the outcome — patient limit orders typically fill closer to mid than market orders.

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. With this market's current book depth ($378K of resting liquidity), a $500 order should fill with single-cent slippage at the displayed mid-price.

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 "Roland Garros WTA: Antonia Ruzic vs Madison Keys" 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?

$207K in lifetime turnover and $378K of resting liquidity puts this market in the top 10% by volume for tennis contracts on PolyGram. Order-book depth is exceptional — among the deepest order books in the category.

Last 24 hours alone saw $200K 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.

This market's resolution criterion

For "Roland Garros WTA: Antonia Ruzic vs Madison Keys", the resolution criterion is: This market refers to the tennis match between Antonia Ruzic and Madison Keys in the Roland Garros WTA, originally scheduled for May 28, 2026 at 5:00AM ET. This market will resolve to 'Antonia Ruzic' if Antonia Ruzic advances against Madiso…

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. For "Roland Garros WTA: Antonia Ruzic vs Madison Keys", the considerations above apply directly — Trade size should reflect the binary nature of the payoff: even a 70% probability event resolves NO 30% of the time, so any single position can lose 100% of staked capital.

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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