Roland Garros WTA: Ksenia Efremova vs Sorana Cirstea

Platform comparison

Active sub-markets

Market context

Ksenia Efremova, a Russian professional tennis player ranked outside the top 100, faces Romanian competitor Sorana Cirstea in the opening rounds of Roland Garros in late May 2026. Cirstea, a former top-20 player with multiple Grand Slam main-draw appearances, enters as the favoured competitor based on career trajectory and seeding precedent. The match is scheduled for 5:00 AM ET on 24 May, a time slot typical for early-round qualifying or lower-profile first-round contests at the French Open.

Historical precedent suggests that markets on early-round women's tennis matches at Roland Garros reflect significant uncertainty when one player carries substantially higher ranking credentials. Cirstea's career record—including WTA tour wins and prior Grand Slam participation—typically commands implied probabilities of 65–80% in comparable matchups against unseeded or lower-ranked opponents. The current 0% probability for Efremova reflects either a data error, extreme illiquidity, or settlement mechanics not yet activated. Similar markets on qualifying-round matches have historically resolved based on official WTA records within 48 hours of completion.

Traders should monitor the official Roland Garros draw publication, typically released in late April, to confirm seeding and bracket placement. Injury announcements or withdrawal notices from either player would trigger the 50–50 tie resolution clause if the match does not proceed. Weather delays at Roland Garros frequently push matches beyond their scheduled time; the settlement window extends to 31 May, allowing seven days for completion. Recent ATP and WTA scheduling data from 2025 indicates early-morning slots are rarely postponed beyond 72 hours unless court conditions deteriorate significantly.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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

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 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.

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.

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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.