Roland Garros WTA: Kimberly Birrell vs Jessica Pegula

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Market context

Jessica Pegula faces Australian qualifier Kimberly Birrell in the opening round of Roland Garros on 24 May 2026. The 100% implied probability reflects Pegula's ranking advantage—she sits considerably higher in the WTA standings—and her track record against lower-ranked opponents on clay. Birrell, ranked outside the top 100, would need a significant upset to progress, though Roland Garros' surface occasionally produces surprises favourable to players with strong baseline games.

The historical context here matters considerably. Pegula has won her last four opening-round matches at Grand Slams, including a straight-sets victory over a similarly ranked opponent at the French Open two years prior. Birrell has never advanced past the second round at a major, though she did reach the quarter-finals of a WTA 250 event on clay in 2024. The probability assignment largely reflects these empirical patterns rather than any recent form shift; Pegula's consistency in early rounds at Roland Garros has been the dominant factor in pricing.

Traders should monitor the draw confirmation and any late withdrawals in the coming weeks, as scheduling changes occasionally occur. Weather forecasts for late May in Paris could influence court allocation and match timing, particularly if rain delays compress the schedule. Pegula's fitness status heading into the tournament will be worth tracking through her warm-up events in May; any injury concerns would shift the calculus substantially. The settlement window extends to 31 May, allowing for potential delays without triggering the 50-50 resolution clause.

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 Prediction Today, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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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 Prediction Today?

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How fast are USDC deposits?

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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.