National Bank Open: Kamilla Rakhimova vs Venus Williams

Platform comparison

Market context

Kamilla Rakhimova and Venus Williams are listed as an upcoming first-round meeting in Toronto, with the match still on the schedule and no result recorded yet. The market’s 100% implied price for Rakhimova lines up with the pre-match rankings gap: Rakhimova is around the low 80s in the WTA standings, while Williams is entered as a wildcard and sits far lower on the live list[1][4][7].

The historical frame is simple because there is no head-to-head to lean on: this is their first career meeting, so traders are reading the matchup almost entirely through current form, level and surface rather than any direct precedent[2][4][6]. Comparable previews also point the same way, with bookmakers and model-style previews making Rakhimova the clear favourite on outdoor hard courts, despite Williams’ experience and name value[12][13][16].

For today’s outlook, the main catalysts are whether the match stays on the published Centre Court schedule and whether Toronto’s order of play changes, as several listings have already shown slightly different kick-off times on the same day[5][7][9][16]. Venus Williams’ fitness and any late withdrawal would matter most for this market because a no-show, cancellation or delay beyond the settlement rules can force a 50-50 outcome rather than a winner-based resolution. The official tournament match page and WTA match notes are the cleanest sources to watch for a start-time change or a completed result[4][9].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Kamilla Rakhimova vs Venus Williams across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Prediction Today, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.