Wimbledon ATP: Benjamin Bonzi vs Gabriel Diallo

Platform comparison

Market context

The underlying event is the Round of 128 tennis match at Wimbledon between Benjamin Bonzi and Gabriel Diallo, originally scheduled for 6:00AM ET on 29 June 2026. Live score data confirms the match has concluded with a retirement, resulting in Gabriel Diallo advancing while Bonzi did not complete the contest[1]. This outcome starkly contradicts the current prediction-market implied probability of 0% for Bonzi advancing, suggesting the market has either pre-emptively priced the retirement or is misaligned with the official result.

Historically, prediction markets often lag behind live retirements in tennis, particularly when matches end early in the day, creating a divergence between sportsbook lines and market pricing. In this case, sportsbooks initially favoured Diallo at -115 odds, implying a 53.5% win chance, while Bonzi held a 52.4% implied chance despite the -110 price[3]. The 0% market probability for Bonzi now reflects the retirement reality, whereas analyst consensus from Tennis Tonic still listed Diallo as the pick to win in five sets, highlighting a delay in consensus adjustment to the live outcome[2].

Traders should monitor official Wimbledon retirement confirmations and subsequent draw adjustments, as these dictate settlement. Recent coverage from Tennis.com confirms the retirement status and the final score progression before the match ended[1]. With the settlement window ending 6 July 2026, any delay in official result validation could trigger the 50-50 tie clause if the match is deemed incomplete without a winner, though the retirement appears final. The Robinhood exact-score market already priced Bonzi winning 3-0 at 33¢ versus Diallo at 1¢, indicating early market confidence in Diallo before the retirement[4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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 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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.