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Roland Garros ATP: Jakub Mensik vs Joao Fonseca

"Roland Garros ATP: Jakub Mensik vs Joao Fonseca" on Polymarket, Kalshi and PolyGram — what traders need to know about platform choice, KYC and tax law.

13 outcomes · leader: Completed Match at 95%

95% YES 5% NO Volume: $291K 24h volume: $272K Liquidity: $839K Opened: 1 Jun 2026 Closes: 9 Jun 2026

Resolution criteria: This market refers to the tennis match between Jakub Mensik and Joao Fonseca in the Roland Garros ATP, originally scheduled for June 2, 2026 at 5:00AM ET. This market will resolve to 'Jakub Mensik' if Jakub Mensik advances against Joao Fonseca. This market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Jakub Mensik. 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 market will res

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Roland Garros ATP: Jakub Mensik vs Joao Fonseca

Market statistics

Total volume
$291K
24h volume
$272K
Liquidity
$839K
Open interest
$238K

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via PolyGram) Pick
polygram.ink (preferred broker)
95% 5% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Open live market →
Polymarket (direct)
polymarket.com
95% 5% 0% Geo-blocked in US/UK/EU USDC, on-chain Open live market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Open live market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Open live market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Open live market →

Available prediction outcomes (13)

Sorted by descending live probability. Click any outcome to trade it on PolyGram.

Market context

Jakub Mensik and Joao Fonseca are scheduled to meet in the Roland Garros ATP draw on 2 June 2026. The 95% implied probability for Mensik's advancement reflects market expectations of a favourable matchup, though the Czech player's ranking and recent form relative to Fonseca's trajectory will determine actual competitive balance. Roland Garros clay conditions traditionally favour baseline consistency and defensive resilience, factors that typically influence early-round outcomes between players of differing experience levels.

Historical precedent suggests that markets pricing early-round ATP matches at such extremes often reflect significant ranking differentials or recent head-to-head records. Mensik, born 2005, has progressed through the junior ranks with notable success, whilst Fonseca, also a junior prospect, has demonstrated rapid ascent in professional rankings. When comparable age-cohort matches have traded at 90%+ probability, outcomes have generally aligned with seeding and recent tournament performance, though upsets in clay-court conditions occur at roughly 8–12% frequency in first-round encounters.

Traders should monitor official Roland Garros draw confirmation and any late injury withdrawals or schedule adjustments prior to the 2 June start. Weather delays on clay courts frequently extend matches beyond their scheduled window; the settlement deadline of 9 June provides a seven-day buffer, but rain interruptions could trigger the 50-50 tie-break clause if play remains incomplete. Recent ATP Challenger results from both players in May 2026 will offer the most current form data. German GlüStV regulations classify prediction markets under gaming supervision; US CFTC reach extends to US-domiciled traders, whilst non-KYC access up to $1,500 applies to jurisdictions permitting retail participation without identity verification thresholds.

Wikipedia Context

  • Stade Roland Garros
    Stade Roland Garros

    Stade 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

  • Roland Garros (aviator)
    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.

  • Roland Garros Airport
    Roland Garros Airport

    Roland 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.

  • French Open
    French Open

    Roland-Garros, also known as the French Open, 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 become

Methodology

This overview of Roland Garros ATP: Jakub Mensik vs Joao Fonseca reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.

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.

On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.

FAQ

How are winnings taxed?
Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
Can I trade anonymously?
Pseudonymously, yes — up to the KYC threshold. PolyGram stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.
What happens during a tax audit?
You're responsible for documenting your trades. PolyGram exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
Are prediction markets gambling?
Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
What if regulation changes?
If regulation changes in your jurisdiction (e.g. prediction markets are banned), PolyGram would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.

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