Wimbledon ATP: Rafael Jodar vs Felix Gill

Platform comparison

Market context

The real-world event is the Wimbledon ATP Round of 128 match between Rafael Jodar of Spain and Felix Gill of Great Britain, scheduled for 11:00am on Court 3 today. Historical precedents for 100% YES probabilities in tennis markets typically signal a walkover or a player withdrawal before the first ball is struck, rather than a guaranteed on-court victory. In cases where a seeded player like Jodar, the No. 23 seed, faces a debutant, such absolute pricing often reflects a pre-match resolution where the opponent cannot compete, aligning with rules that default unplayed matches to a fair price rather than a winner[5].

A trader evaluating this programmatically must monitor the official start signal, specifically the first ball played, to confirm the match is active and not cancelled due to injury or forfeiture[5]. The primary catalyst is Jodar’s recent abdominal injury, which caused him to withdraw from Queen’s and Eastbourne, leaving him with no official match in 27 days and raising the risk of a pre-match withdrawal[6]. Traders should watch the Wimbledon day-one schedule announcement for any updates on Gill’s readiness or Jodar’s fitness status, as any delay beyond seven days without a winner would resolve the market to 50-50[4]. Conditional orders should be set to trigger only if the match begins, ensuring exposure is limited to actual play rather than theoretical outcomes[5].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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'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.