National Bank Open: Alina Korneeva vs Coco Gauff

Platform comparison

Market context

Polymarket is pricing **Alina Korneeva** at **12%** and **Coco Gauff** at **88%** on this contract, with settlement in **USDC on Polygon** via conditional tokens rather than a cash sportsbook-style wager.[6] For a user holding yes/no shares, the key point is that the market resolves on **who advances**, not on set score, and the contract falls back to **50-50** if the match is not played, ends level, or is still undecided more than seven days after the scheduled date.[6]

That 12% implied price sits below most conventional tennis books and preview models, which have generally made Gauff a strong favourite, with listed moneyline prices around **-375** to **-410** and projected win rates in the mid-70s.[1][7][10][17] Polymarket’s own team page has also shown a much wider split on the match market, around **77% Gauff to 23% Korneeva** on the main head-to-head listing, so the current 12% line looks like a relatively low bid on an upset rather than a neutral read of the draw.[3] In practical terms, traders are paying up only if they think Korneeva can turn this into a long, momentum-driven match.

The live catalysts are straightforward: final start time, court allocation, any weather delay, and whether the match actually begins and reaches a winner before the seven-day window closes.[6][9] Recent previews have leaned towards Gauff in straight sets or in three, which matters because a competitive first set can shift pricing quickly if Korneeva holds serve early or forces a tiebreak.[1][16] For Polymarket users, the main dependency is execution risk around the schedule: if the match is postponed, interrupted, or abandoned before completion, the contract mechanics can matter more than the tennis itself.[6]

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

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.

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.

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.