Mubadala Citi DC Open, Qualification: Mackenzie McDonald vs Trevor Svajda

Platform comparison

Market context

Mackenzie McDonald and Trevor Svajda are due to meet in Washington qualifying, and the market is pricing that as a McDonald-favoured spot despite the contract showing 0% YES on the current crowd-implied read. Tennis.com’s pre-match projection gave McDonald a 71% chance and Svajda 29%, while Tennis Tonic also made McDonald the clear favourite, listing him at around 1.28 in initial odds versus 3.26 for Svajda.[1][4]

That view fits the limited head-to-head evidence: McDonald leads the series 1-0, winning their only recorded meeting 6-3 6-4 in San Diego Challenger qualifying in 2025.[3] Svajda also comes in as a wildcard in the Washington draw, which usually signals a less established baseline than a seeded or main-draw regular, but the market still has to price the actual path to resolution carefully because qualification markets can flip on late withdrawals, walkovers, or scheduling changes rather than on match-level form alone.[1][4]

For traders, the key catalysts are confirmation that the qualifying match is actually played, whether the order of play stays intact, and any late changes to player status before the settlement window closes. If the match is postponed, cancelled, or left unfinished beyond the contract’s seven-day limit without a winner, the market resolves 50-50 rather than to either player, so the timing risk matters almost as much as the on-court edge.

Sources: 1 · 2 · 3 · 4

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

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 Best Prediction Markets. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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 Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.