Bonn: Jan Choinski vs Olle Wallin

Platform comparison

Market context

Polymarket is pricing the Jan Choinski–Olle Wallin contract at **100% YES**, so the market is effectively assuming Choinski will advance rather than treating this as a live coin toss. On Polymarket, that position is backed by USDC on Polygon and settles via conditional tokens, with the event resolving to Choinski, Wallin, or 50-50 only if the match is not completed in the way the rules specify.

The main reference point for reading that price is the pre-match market structure rather than any head-to-head history, because the available records show **no prior meetings** between the pair[1][3][5]. Public match pages also point to a lopsided baseline in rankings, with Choinski listed around ATP No. 88 and Wallin around No. 386, while betting screens have shown Choinski as a heavy favourite at roughly 1.22 against 3.90[9][15]. That said, both players have recent win runs in Challenger-level play, so the market is still tied to one-off match conditions on the day rather than a broader rivalry pattern[1][11].

The main catalysts are straightforward: confirmation that the match starts on schedule, whether the Bonn order of play holds, and whether either player withdraws before first ball, because a cancellation or a delay beyond seven days would push the market to 50-50 under the contract rules. Bonn draw listings place this as a round-of-16 match on 31 July, with surrounding fixtures already completed, so traders should watch for any schedule compression, court changes, or retirement news from the tournament feed rather than relying on price alone[3][6][11].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Bonn: Jan Choinski vs Olle Wallin 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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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'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.