Roland Garros ATP: Stan Wawrinka vs Arthur Fils

Platform comparison

Active sub-markets

Market context

Stan Wawrinka and Arthur Fils are due to meet in the French Open first round, with the market currently pricing only a modest chance of a Wawrinka win at 14%. That sits well below the kind of mid-teen “live underdog” pricing seen on exchanges when a veteran faces a home favourite on clay. On bookmaker screens, the same match is being expressed in very different formats: Oddschecker shows Fils at 8/11 for a straight win, while FanDuel and similar books present decimal-style moneyline prices that translate into a clear favourite margin. Kalshi’s exact-score contract also points towards a routine Fils result, with the highest displayed probability concentrated on a straight-sets outcome. The comparison matters because prediction markets, unlike fixed-margin sportsbooks, move on implied probability and can look cheaper or richer depending on whether you are comparing against decimal odds, commission, or the cost of crossing the spread.

The main trading catalysts are simple: whether the match is actually played as scheduled, whether either player withdraws, and whether the result is completed inside the settlement window. ATP reporting has already flagged Fils v Wawrinka as one of the first-round matches to watch at Roland Garros, which reinforces that the fixture is expected to go ahead and be priced closely by the market. If the match is delayed, interrupted, or ends via retirement, the market’s specific settlement rules become more important than the pre-match price, especially where exchange-style platforms and bookmaker lines diverge on how post-start outcomes are handled. For traders comparing Polymarket-style markets with Betfair, Smarkets or sportsbook books, the practical differences are not just price: commissions, market depth and KYC access can all change the effective cost of holding a view on the same tennis match.

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Methodology

We read Roland Garros ATP: Stan Wawrinka vs Arthur Fils 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.

Is this market available outside the US?

PolyGram 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.

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.