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National Bank Open: Antonia Ruzic vs Madison Keys

"National Bank Open: Antonia Ruzic vs Madison Keys" — odds, fees, regulatory status. Polymarket Tax UK as a Polymarket alternative.

Completed Match 100% National Bank Open: Antonia Ruzic vs Madison Keys Set Handicap +/-1.5 100% National Bank Open: Antonia Ruzic vs Madison Keys 0% National Bank Open: Antonia Ruzic vs Madison Keys Set 1 Winner 0% Volume: $323K Closes: 11 Aug 2026
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National Bank Open: Antonia Ruzic vs Madison Keys

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Polymarket Tax UK) Pick
polygram.ink (preferred broker)
100% 0% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Trade this market →
Polymarket (direct)
polymarket.com
100% 0% 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 →

Outcome probabilities

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

OutcomeProbability
Completed Match100%
National Bank Open: Antonia Ruzic vs Madison Keys Set Handicap +/-1.5100%
National Bank Open: Antonia Ruzic vs Madison Keys0%
National Bank Open: Antonia Ruzic vs Madison Keys Set 1 Winner0%
National Bank Open: Antonia Ruzic vs Madison Keys Total Sets: O/U 2.50%
National Bank Open: Antonia Ruzic vs Madison Keys Match O/U 21.50%
National Bank Open: Antonia Ruzic vs Madison Keys Set 2 Winner0%
National Bank Open: Antonia Ruzic vs Madison Keys Set 2 O/U 8.50%
National Bank Open: Antonia Ruzic vs Madison Keys Set Handicap +/-1.50%
National Bank Open: Antonia Ruzic vs Madison Keys Set 1 O/U 8.50%
National Bank Open: Antonia Ruzic vs Madison Keys Match O/U 22.50%
National Bank Open: Antonia Ruzic vs Madison Keys Set 2 O/U 9.50%
National Bank Open: Antonia Ruzic vs Madison Keys Set 1 O/U 9.50%
National Bank Open: Antonia Ruzic vs Madison Keys Match O/U 23.50%
National Bank Open: Antonia Ruzic vs Madison Keys Set 2 O/U 10.50%
National Bank Open: Antonia Ruzic vs Madison Keys Set 1 O/U 10.50%

Market context

Antonia Ružić’s second-round meeting with Madison Keys at the National Bank Open is the kind of market where the live schedule matters as much as the pre-match price, because a straight win for either player resolves the market, while a cancellation, tie, or delay beyond seven days pushes it to 50-50 under the rules. The crowd-implied 0% YES reading is therefore best treated as a pricing artefact rather than a statement that Keys cannot win; the market still resolves on the tennis result, not on perceived likelihood.

The historical comparison is straightforward: recent previews and odds made Keys a heavy favourite, with modelled win probabilities ranging from about 78% to 83% and betting prices implying a similar split, while one prior meeting also went Keys’ way[3][7][16][20]. That context frames the current market as one where the weak side needs either an upset or an administrative outcome for value to emerge. For users reading this through a German regulatory lens, the key point is that German GlüStV restrictions can affect whether a customer can access or participate in offshore gambling-like products, even when the market itself is sports-event based.

Catalysts to watch are simple: official tournament scheduling, any court-order changes, rain delays, walkovers, and whether the match actually begins by the listed slot, because those are the events that decide whether the market settles normally or drifts into the 50-50 fallback. Recent live listings show the fixture as active across tennis score and event pages, and a trading venue has priced Keys around 82% with Ruzic around 18%, which is materially above the current crowd-implied 0% YES[10][13][15][16]. For accessibility, “no-KYC up to $1,500” means some platforms may allow relatively small-scale trading or withdrawals with limited identity checks until that threshold, but the exact availability still depends on the user’s jurisdiction, including potential US CFTC reach if the product is treated as a regulated derivatives-style event contract.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of National Bank Open: Antonia Ruzic vs Madison Keys 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

Do I need to KYC for Polymarket Tax UK?
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.
Can I trade anonymously?
Pseudonymously, yes — up to the KYC threshold. Polymarket Tax UK 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.
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.
Is there a withdrawal cap?
No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
What if regulation changes?
If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Tax UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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Related Topics

Tennis Prediction Markets