🎁 New traders: 100% Deposit Match up to $500 · 0% fees · instant USDC payoutsClaim it →
Skip to main content
HomeGuideCryptoMarketsBlogGo to the live market →

National Bank Open: Aoi Ito vs Katherine Sebov

"National Bank Open: Aoi Ito vs Katherine Sebov" on Polymarket, Kalshi and Is Kalshi Legal in California — what traders need to know about platform choice, KYC and tax law.

Completed Match 100% National Bank Open: Aoi Ito vs Katherine Sebov Set 2 O/U 8.5 100% National Bank Open: Aoi Ito vs Katherine Sebov Set 1 O/U 8.5 100% National Bank Open: Aoi Ito vs Katherine Sebov Set 2 O/U 9.5 100% Volume: $137K Closes: 9 Aug 2026
Open live market →
National Bank Open: Aoi Ito vs Katherine Sebov

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
Completed Match100%
National Bank Open: Aoi Ito vs Katherine Sebov Set 2 O/U 8.5100%
National Bank Open: Aoi Ito vs Katherine Sebov Set 1 O/U 8.5100%
National Bank Open: Aoi Ito vs Katherine Sebov Set 2 O/U 9.5100%
National Bank Open: Aoi Ito vs Katherine Sebov Set Handicap +/-1.5100%
National Bank Open: Aoi Ito vs Katherine Sebov0%
National Bank Open: Aoi Ito vs Katherine Sebov Set 1 Winner0%
National Bank Open: Aoi Ito vs Katherine Sebov Set 2 Winner0%
National Bank Open: Aoi Ito vs Katherine Sebov Total Sets: O/U 2.50%
National Bank Open: Aoi Ito vs Katherine Sebov Match O/U 21.50%
National Bank Open: Aoi Ito vs Katherine Sebov Set Handicap +/-1.50%
National Bank Open: Aoi Ito vs Katherine Sebov Set 1 O/U 9.50%
National Bank Open: Aoi Ito vs Katherine Sebov Match O/U 22.50%
National Bank Open: Aoi Ito vs Katherine Sebov Set 2 O/U 10.50%
National Bank Open: Aoi Ito vs Katherine Sebov Match O/U 23.50%
National Bank Open: Aoi Ito vs Katherine Sebov Set 1 O/U 10.50%

Market context

Aoi Ito and Katherine Sebov are scheduled to meet in the first round of the National Bank Open in Toronto on an outdoor hard court, with the WTA match notes listing Ito as a qualifier and Sebov as a wildcard.[9] The market’s 0% YES price is therefore best read as a view that Ito is unlikely to advance, but the event is still live until the match is completed or the settlement rules are triggered by cancellation or delay.[9]

The comparable framework is straightforward: both players are near the lower end of the WTA rankings in the official match notes, and the head-to-head is 0-0, so there is no prior direct form line between them to anchor a strong pre-match edge.[9] That matters because small changes in draw position, court conditions, or late withdrawal risk can move a thinly traded market more than the rankings alone suggest. In regulatory terms, access can also differ sharply by jurisdiction: markets like this are typically not available under the German GlüStV regime unless the platform holds the relevant authorisation, and US-facing access is constrained by the broad reach of the CFTC over event contracts tied to sports outcomes.

The main catalysts are operational rather than speculative: final order of play, any court reassignment, weather disruption, and whether the match starts and finishes within the settlement window. National Bank Open scheduling updates show the Ito-Sebov fixture on the Sunday Centre Court card alongside other first-round matches, so any change to the day’s programme could affect how the market resolves.[12][14] For accessibility, “no-KYC up to $1,500” generally means a user may be able to trade without full identity verification until cumulative activity hits that threshold, but only where the operator’s onboarding rules and local law permit participation in the first place.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of National Bank Open: Aoi Ito vs Katherine Sebov 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 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.
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.
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), Is Kalshi Legal in California would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
and

Trade National Bank Open: Aoi Ito vs Katherine Sebov on Is Kalshi Legal in California

Live order book, 0% fees, USDC settlement in seconds.

Open live market →

Related Topics

Tennis Prediction Markets