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US Open ATP: Jakub Mensik vs Shintaro Mochizuki

"US Open ATP: Jakub Mensik vs Shintaro Mochizuki" on Polymarket, Kalshi and Is Kalshi Legal in California — what traders need to know about platform choice, KYC and tax law.

US Open ATP: Jakub Mensik vs Shintaro Mochizuki 100% Completed Match 100% US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 2 O/U 8.5 100% US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 2 Winner 100% Volume: $79K Closes: 6 Sept 2026
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US Open ATP: Jakub Mensik vs Shintaro Mochizuki

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Is Kalshi Legal in California) Pick
polygram.ink (preferred broker)
100% 0% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Go to the live market →
Polymarket (direct)
polymarket.com
100% 0% 0% Geo-blocked in US/UK/EU USDC, on-chain Go to the live market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Go to the live market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Go to the live market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Go to the live market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
US Open ATP: Jakub Mensik vs Shintaro Mochizuki100%
Completed Match100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 2 O/U 8.5100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 2 Winner100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 1 Winner100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set Handicap +/-1.5100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 2 O/U 9.5100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 3 Winner100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set Handicap +/-2.5100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 3 O/U 8.5100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 3 O/U 9.5100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 3 O/U 10.5100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Game Spread +/-7.5100%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 4 Winner50%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 4 O/U 8.550%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 4 O/U 9.550%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 4 O/U 10.550%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 1 O/U 8.50%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Total Sets: O/U 3.50%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Match O/U 36.50%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Total Sets: O/U 4.50%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 1 O/U 9.50%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Match O/U 38.50%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 1 O/U 10.50%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Set 2 O/U 10.50%
US Open ATP: Jakub Mensik vs Shintaro Mochizuki Match O/U 40.50%

Market context

Traders on decentralised prediction markets give 100% probability to us open atp: jakub mensik vs shintaro mochizuki. This market refers to the tennis match between Jakub Mensik and Shintaro Mochizuki in the US Open ATP, originally scheduled for August 30, 2026 at 11:00AM ET. This market will resolve to 'Jakub Mensi…

Methodology

This overview of US Open ATP: Jakub Mensik vs Shintaro Mochizuki 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

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

Is Polymarket legal in my country?
Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Is Kalshi Legal in California has a different geo footprint.
Do I need to KYC for Is Kalshi Legal in California?
Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
What happens during a tax audit?
You're responsible for documenting your trades. Is Kalshi Legal in California 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), Is Kalshi Legal in California would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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Related Topics

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