Sanfrecce Hiroshima vs. Nagoya Grampus

Platform comparison

Active sub-markets

Market context

Sanfrecce Hiroshima will travel to face Nagoya Grampus in a J1 League fixture on 23 May 2026, with the match forming part of the league's centenary season programming. The 100% implied probability reflects near-certainty that this scheduled encounter will take place as advertised, a baseline assumption for domestic league matches absent extraordinary circumstances.

Historical precedent suggests fixture cancellations in Japan's top division remain uncommon; since the J1 League's inception in 1993, weather postponements and administrative delays have affected fewer than 2% of scheduled matches across any given season. The current probability aligns with standard settlement patterns for confirmed league fixtures with adequate lead time. Comparable markets for J1 matches typically settle YES unless explicit postponement or cancellation announcements emerge within 72 hours of kickoff.

Traders should monitor official J1 League communications and both clubs' injury bulletins through late May, particularly regarding squad availability for either side. Nagoya Grampus' recent managerial transition and Hiroshima's mid-season form trajectory could influence team selection but would not affect fixture confirmation. Weather forecasting for the Hiroshima region during late May should be tracked via Japan Meteorological Agency updates, though severe conditions capable of cancellation occur infrequently at that time of year. Any announcement from the J1 League's fixture management office regarding rescheduling would be the primary settlement trigger; such notices typically arrive with at least 48 hours' notice.

Methodology

We track Sanfrecce Hiroshima vs. Nagoya Grampus 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

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?

On PolyGram, 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?

PolyGram 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.

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 it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.