Birmingham: Coleman Wong vs Filippo Romano

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Active sub-markets

Market context

Coleman Wong and Filippo Romano are scheduled to meet at Birmingham's grass-court tournament on 4 June 2026, with the match originally set for 5:30 AM ET. The 0% YES probability currently priced on Polymarket reflects either minimal liquidity or a technical lag in the conditional token market on Polygon—such extreme edges rarely persist once USDC volume enters the order book. Settlement hinges on Wong advancing past Romano; if the match is cancelled, delayed beyond seven days without completion, or ends in a tie, the contract resolves 50-50 across the conditional token split.

Historical precedent suggests that grass-court upsets at Birmingham occur frequently enough that pre-tournament pricing often undervalues lower-ranked challengers. Romano, ranked outside the top 100, would face Wong—a player with modest ATP credentials—in what amounts to a qualifying or early-round fixture. The 0% quote likely reflects either missing market data or assumption that one player has withdrawn; comparable early-round matches at grass tournaments typically trade with 40-60 probability splits depending on ranking differential and recent form.

Traders should monitor the ATP official draw release and any injury announcements through early June. The settlement window closes 11 June at 09:30 UTC, providing a week-long buffer beyond the scheduled date. Recent tournament cancellations and weather delays at grass events (notably at Queen's and Wimbledon qualifying rounds) have triggered 50-50 resolutions, so fixture confirmation closer to the event date becomes critical for position management.

Methodology

We track Birmingham: Coleman Wong vs Filippo Romano on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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

Where can I trade this market with the lowest fees?

On Polymarket Legit?, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket Legit? is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Legit? triggers a quick verification flow that finishes in minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.