Canadian Open: Juan Manuel Cerundolo vs Hamad Medjedovic

Platform comparison

Market context

Juan Manuel Cerundolo’s match with Hamad Medjedovic in Montreal is being priced as a near certainty on the crowd line, but the tennis data itself points to a much more balanced contest than a 100% implied win would suggest. The pair have already met twice on the ATP stage, with Medjedovic winning both meetings, including a straight-sets result at Roland Garros in 2025 and another clay-court win in 2023; several match trackers and H2H databases also note Medjedovic’s overall edge in the matchup[2][3][6][9]. Tennis.com’s tournament page for the National Bank Open had Medjedovic as the projected winner at 59%, while another preview put him around 1.48 in decimal terms versus 2.64 for Cerundolo, a reminder that bookmaker-style pricing and prediction-market probabilities are not directly comparable one-for-one[15][16]. On platforms such as Betfair or Smarkets, traders usually see decimal odds and then back out implied probability, while Polymarket and Kalshi display the probability more directly; fees, liquidity and access rules can also differ materially, especially because KYC and jurisdictional reach are not the same across venues.

For traders, the main catalysts are match confirmation, court assignment and any reshuffling caused by the Canadian Open schedule. The listing currently points to a Montreal start on 3 August 2026, but Tennis.com’s event page and live-score feeds show the matchup is embedded in a broader tournament draw, so any withdrawal, walkover or postponement could matter more than small pre-match modelling differences[7][10][15][20]. That matters for settlement because this market resolves to 50-50 if the match is not played, ends tied, or is delayed more than seven days without a winner. In practice, the market is therefore less about the likely winner than about whether the fixture actually goes ahead within the settlement window, which is the key issue to monitor across all platforms.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Canadian Open: Juan Manuel Cerundolo vs Hamad Medjedovic 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

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

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.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

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.