Roland Garros WTA: Marta Kostyuk vs Mirra Andreeva

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Active sub-markets

Market context

Marta Kostyuk and Mirra Andreeva are scheduled to meet in the Roland Garros women's draw on 4 June 2026. Kostyuk, the Ukrainian left-hander ranked in the top 20, brings consistent clay-court form and a baseline game suited to the slower Paris surface. Andreeva, the Russian teenager who broke through in 2024, has demonstrated rapid improvement on hard courts and clay but remains less battle-tested in Grand Slam knockouts. The 56% crowd probability favours Kostyuk, reflecting her experience advantage and established ranking over Andreeva's emerging talent.

Head-to-head records between players at this career stage often underweight trajectory and recent momentum. Andreeva's 2024–25 season showed significant progression, with multiple WTA 250 runs and improved seeding at majors, yet she has not yet accumulated the volume of clay-court matches or deep Roland Garros runs that Kostyuk has logged. Kostyuk's consistency in qualifying for second weeks at clay events provides a historical edge, though Andreeva's youth and adaptability have surprised established players before.

The settlement window closes 11 June at 13:00 UTC, allowing seven days for completion. Traders should monitor official Roland Garros draw confirmations and any injury updates in the fortnight before play. Kostyuk's recent performances on European clay in May will be the primary indicator of form; similarly, Andreeva's seeding and draw position relative to other top-16 players will signal confidence in her trajectory. Weather delays at Roland Garros occasionally compress schedules, which could favour the player with fresher legs entering the match.

Methodology

We track Roland Garros WTA: Marta Kostyuk vs Mirra Andreeva on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Champions League Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Champions League Prediction is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Champions League Prediction?

Zero. Champions League Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.