Market statistics
- Total volume
- $705K
- 24h volume
- $637K
- Liquidity
- $521K
- Open interest
- $612K
Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
33% | 67% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
33% | 67% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Available prediction outcomes (13)
Sorted by descending live probability. Click any outcome to trade it on PolyGram.
Market context
This market refers to the tennis match between Matteo Arnaldi and Flavio Cobolli in the Roland Garros ATP, originally scheduled for June 5, 2026 at 8:30AM ET. This market will resolve to 'Matteo Arnaldi' if Matteo Arnaldi advances against Flavio Cobolli. This market will resolve to 'Flavio Cobolli' if Flavio Cobolli advances against Matteo Arnaldi. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this
Wikipedia Context
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Stade Roland GarrosStade Roland Garros is a complex of tennis courts, including stadiums, located in Paris that hosts the French Open. That tournament, also known as Roland Garros, is a major tennis championship played annually in late May and early June. The complex is named after Roland Garros (1888–1918), a pioneering French aviator, and was constructed in 1928 to host Fran
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Roland Garros (aviator)Eugène Adrien Roland Georges Garros was a French aviation pioneer and fighter pilot. A self-taught pilot, he performed many early aviation feats such as the first-ever airplane crossing of the Mediterranean Sea in 1913. He later joined the French Army and became one of the earliest fighter pilots during First World War.
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Roland Garros AirportRoland Garros Airport, formerly known as Gillot Airport, is an international airport located in Sainte-Marie on Réunion, France. The airport is 7 kilometres (3.8 NM) east of Saint-Denis; it is named after the French aviator Roland Garros, who was born in Saint-Denis.
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French OpenThe French Open, also known as Roland-Garros, is a tennis tournament organized by the French Tennis Federation annually at Stade Roland Garros in Paris, France. It is chronologically the second of the four Grand Slam tennis events every year, held after the Australian Open and before Wimbledon and the US Open. It was established in 1891, but it did not becom
Methodology
Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Roland Garros ATP: Matteo Arnaldi vs Flavio Cobolli plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.
Resolution & payout
Resolution source: This market settles from the official publication at https://www.atptour.com/en/scores/current. A proposer submits the result to the UMA Optimistic Oracle on Polygon, the two-hour challenge window opens, and the smart contract pays out in USDC.
For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.
FAQ
- How accurate are political prediction markets?
- Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.
- Can prediction markets influence election outcomes?
- Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.
- Which platform has the deepest political liquidity?
- Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like PolyGram route into the same order book at 0% fees.
- Why do Polymarket and Kalshi differ on elections?
- Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.
- Which political events have the biggest volume?
- US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.
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