Roland Garros, Qualification WTA: Polina Kudermetova vs Xiyu Wang

Platform comparison

Active sub-markets

Market context

Polina Kudermetova and Xiyu Wang were scheduled to meet in Roland Garros qualifying on clay, and the match price has been left at an extreme 0% YES on the market feed despite bookmakers showing a live contest. BetMGM listed Wang around 1.65 and Kudermetova around 2.15 in decimal terms, while FanDuel priced Wang as the shorter side in straight sets markets as well. That gap is the main comparison point versus Polymarket-style contracts: exchange or sportsbook odds convert directly into an implied win rate before fees, whereas a prediction market can sit at a different level because of liquidity, participant mix, and settlement conventions. Both players came through qualifying, which tends to make early-round clay prices less stable than main-draw events.

The recent form picture is mixed rather than one-sided. A preview from Tennis Tonic noted that both had already played two qualifying matches, with Kudermetova dropping one set and Wang yet to lose one, while Kudermetova had played more games overall but also more total points. H2H data from Tennis Ratio says Kudermetova leads their head-to-head 1-0, but that single meeting is a limited guide in a qualifying context. For traders comparing platforms, Betfair and Smarkets typically add exchange commission on top of the raw market price, while sportsbook prices embed margin; Kalshi-style contracts instead hinge on the exact resolution rule and any delay or cancellation clause. Here, the main watchpoint is whether the match is completed normally before the seven-day window closes, because an abandoned or heavily delayed match would push the contract to the tie outcome rather than either player.

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Methodology

We read Roland Garros, Qualification WTA: Polina Kudermetova vs Xiyu Wang from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

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 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.

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.