US Open, Qualification ATP: Francesco Passaro vs Felix Gill

Platform comparison

Market context

Francesco Passaro is the clear market favourite in this US Open qualifying match against Felix Gill, and the crowd-implied 100% yes price leaves essentially no room for a surprise result. That kind of consensus usually reflects a gap in level or confidence, but it also means the market is paying almost nothing for the underdog’s path, so any edge for Gill has to come from a live view on match dynamics rather than pre-match popularity.

The most useful frame is that qualifying matches at Flushing Meadows are often decided by a small number of service holds and tiebreaks, especially on outdoor hard courts, where lower-ranked players can hang around if they start well. Passaro was listed above Gill in the qualifying draw, with Gill around ATP 221 in the available match data, which supports the orthodox favourite view[1][2]. Recent schedule coverage also shows men’s singles qualifying running over four days from 24–27 August, with first-round and second-round matches spread across the opening days, so timing, court assignment and any short-turnaround effects remain the main catalysts to watch[4][5][8]. A late order-of-play change or prior-round workload would be the main contrarian angle; otherwise, the consensus sits firmly with Passaro[1][15].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews US Open, Qualification ATP: Francesco Passaro vs Felix Gill across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win 2026, which mirrors the Polymarket order book at 0% fees.

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

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 Who Will Win 2026. 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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.