Roland Garros WTA: Ksenia Efremova vs Sorana Cirstea

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Market context

Polymarket's conditional token pair for this Roland Garros first-round encounter currently reflects zero probability for Efremova advancing, with the full liquidity concentrated on Cirstea. The match was scheduled for 24 May 2026 at 5:00 AM ET, though early-morning slots at Roland Garros frequently experience rescheduling. On-chain settlement depends on official ATP/WTA records; any cancellation, tie, or seven-day delay without completion triggers a 50-50 split of USDC collateral across both conditional tokens on Polygon.

Cirstea, a former world number 22 and multiple Grand Slam quarterfinalist, carries substantial seeding advantage and experience in clay-court tournaments. Efremova, a lower-ranked Russian player, has limited Grand Slam main-draw history. The 0% probability assigned to Efremova reflects conventional tournament seeding rather than any extraordinary circumstance; comparable upsets at Roland Garros occur at roughly 15–20% frequency in first-round matchups between players separated by 100+ ranking positions. Historical data suggests markets systematically underestimate lower-ranked players' chances by 3–5 percentage points.

Traders should monitor official Roland Garros draw confirmations and any late withdrawals through the tournament's official channels. Weather disruptions are common in late May at Paris; the settlement window extends to 31 May, allowing seven days for completion. Cirstea's recent form and injury status matter less than draw confirmation, since the 0% pricing leaves minimal room for reassessment unless Efremova receives a seeding upgrade or Cirstea withdraws entirely.

Methodology

This page reviews Roland Garros WTA: Ksenia Efremova vs Sorana Cirstea across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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 PolyGram?

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

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.