National Bank Open: Nikola Bartunkova vs Amanda Anisimova

Platform comparison

Market context

Amanda Anisimova is the clear favourite on the pre-match market, with bookmakers around the match listing her at roughly 1.44 decimal, which corresponds to an implied chance in the low 70s before any margin adjustment.[9][14] By contrast, the crowd-implied probability here is 0% YES because the market has not yet been priced through on the platform; on Polymarket that can sit beside live probability, while Betfair and Smarkets would normally show a matched price and charge commission rather than baking the same risk into a bookmaker-style overround. Anisimova also starts from a higher ranking and stronger season profile: WTA No. 10 against Bartunkova’s No. 42, with no prior head-to-head between them.[3][4][2]

For comparable cases, traders usually lean on ranking gaps, hard-court record and recent form when there is no direct history. Aggregators show Anisimova ahead on 2026 season results and on hard-court Elo, while Bartunkova has respectable hard-court numbers for a lower-ranked player, which is why this looks more like a one-sided favourite than a true coin flip.[1][2][9] That matters for platform comparison: Polymarket expresses the view directly as a percentage, Kalshi also uses yes/no pricing, while Betfair and Smarkets translate the same edge into decimal odds and the net price depends on fees and liquidity rather than just headline probability.

The main catalysts are straightforward: official ATP/WTA scheduling, start-time changes, and whether the match is actually played inside the settlement window. Flashscore listed the match for 6 August 2026 at 21:00, and TennisTemple said statistics would only populate once play begins, which is a reminder that pre-match pricing can stay thin until line-ups and court assignment are confirmed.[8][5] If there is a late withdrawal, washout or postponement beyond seven days, the market resolves to 50-50 rather than a player win, so traders on any venue need to watch for tournament updates more than in-play data.[4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares National Bank Open: Nikola Bartunkova vs Amanda Anisimova specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.