Wimbledon WTA: Amanda Anisimova vs Madison Keys

Platform comparison

Market context

Amanda Anisimova faces Madison Keys in the third round of Wimbledon’s WTA tournament today, with the match originally set for 6:00 AM ET on 4 July 2026. The market currently implies a 38% chance that Anisimova advances, positioning her as the underdog against Keys, who holds odds of -167 compared to Anisimova’s +131[1]. While consensus heavily favours Keys’ powerful serve and grass-court pedigree, value may lie in Anisimova’s recent form—she has won four of her last five matches, including a prior head-to-head victory over Keys[4][5].

Historically, Anisimova’s 1-0 H2H record against Keys offers little predictive weight on grass, as they have never contested a match on this surface[5]. Comparable cases from recent Wimbledon show that underdogs with strong recent form and prior H2H success can outperform implied probabilities when facing top-tier opponents on grass, particularly if the favourite struggles with double faults—a noted vulnerability for Keys in this matchup[1]. The 38% implied probability may understate Anisimova’s chance if Keys’ double-fault rate rises, a key catalyst traders should monitor.

Traders should watch for pre-match press updates on Keys’ fitness and Anisimova’s serve consistency, especially given Keys’ recent press comments about her form at Wimbledon[8]. Action Network highlights Anisimova’s tendency to commit more double faults than Keys, but also notes Keys’ limited aces (under 6.5) as a potential value spot[1]. Any delay in the match start or weather-related interruptions could shift the settlement to 50-50, making timing and surface conditions critical dependencies for this market.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Wimbledon WTA: Amanda Anisimova vs Madison Keys across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.