National Bank Open: Nicolas Mejia vs Martin Landaluce

Platform comparison

Market context

Nicolas Mejia and Martin Landaluce are set to meet in the National Bank Open first round, and the market’s 18% YES price implies Mejia is the outsider despite a close-looking pair on some surface splits. There is no head-to-head record between them, so traders are leaning on ranking, age, and recent level rather than any direct matchup history: tennis listings have Landaluce around ATP 63 and Mejia around ATP 131, while both are right-handed and both have played most of their recent work on hard courts.[10][6][13]

Comparable casework points away from treating the price as a pure coin flip. Flashscore notes Mejia is making his first Masters main-draw appearance and has yet to win a tour-level main-draw hard-court match, with a 0-3 record, while Landaluce has a 14-11 record this season against opponents ranked outside the top 100 and a 4-4 career mark in Masters first-round matches.[2] That profile helps explain why exchange-style markets on Polymarket can trade in implied probability terms, while Betfair, Smarkets and many bookmaker-style screens quote decimal odds that still need converting into percentage form; the practical comparison is whether 18% already embeds fees, liquidity and wider spreads, which can differ materially across venues.

The main catalysts are confirmation of the draw order, any late schedule reshuffles, and whether the match is completed within the settlement window, because this market flips to 50-50 if it is cancelled, ends in a tie, or is delayed beyond seven days without a winner.[0] Live schedules and event pages list the match for 2 August 2026 in Montreal, but traders should watch for tournament communications on court assignment and any injury or withdrawal news, since a walkover or suspension changes settlement mechanics more than raw pre-match form does.[10][14]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read National Bank Open: Nicolas Mejia vs Martin Landaluce from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

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.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

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. Polymarket Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.