Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
61% | 39% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
61% | 39% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Los Cabos Open: Coleman Wong vs Arthur Gea Match O/U 21.5 | 61% |
| Completed Match | 50% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Set 2 O/U 8.5 | 50% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Set 1 O/U 8.5 | 50% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Set 2 O/U 9.5 | 50% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Match O/U 22.5 | 50% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Set 1 O/U 9.5 | 50% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Set Handicap +/-1.5 | 50% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Set 2 O/U 10.5 | 50% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Set 1 O/U 10.5 | 50% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Match O/U 23.5 | 46% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Set 2 Winner | 40% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Total Sets: O/U 2.5 | 38% |
| Los Cabos Open: Coleman Wong vs Arthur Gea | 28% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Set 1 Winner | 24% |
| Los Cabos Open: Coleman Wong vs Arthur Gea Set Handicap +/-1.5 | 9% |
Market context
Coleman Wong’s Los Cabos semi-final against Arthur Géa is the live event behind this market, and the current 17% YES price implies traders see Wong as a clear underdog despite being the higher-ranked player at ATP No. 108 to Géa’s No. 127.[1][2] The ranking gap is modest, which helps explain why the market is not priced as a one-sided coin flip, but the crowd is still leaning towards Géa on recent form and surface-specific results.[6][19]
Historically, this sort of pricing often reflects a clash between headline ranking and short-term hard-court momentum. Wong has a stronger overall tour profile by ranking and career volume, while Géa’s 2026 hard-court record has been reported as especially strong, with one preview citing a 16-2 mark on the surface and another noting a run of wins on hard courts entering this tie.[6][16][19] With no prior head-to-head recorded between them, traders have fewer direct comparison points than usual, so the market is likely relying more on recent match results and tournament-level context than on any established matchup edge.[4][6][14]
The main catalyst to watch is whether the scheduled Los Cabos match actually starts on time and which player converts recent form into early scoreboard control, because tennis markets can reprice quickly on a break of serve or an update to the draw status.[9][12][13] Live listings place the match for 1 August, and preview coverage has already framed Wong’s path around his service numbers in Los Cabos versus Géa’s stronger season-long hard-court record.[9][17][19] If the match is delayed, interrupted, or progresses by retirement rather than completion, settlement rules matter as much as the on-court favourite, so traders should track official draw updates and live score services closely.[4][9][12]
Methodology
Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Los Cabos Open: Coleman Wong vs Arthur Gea plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.
Resolution & payout
For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.
FAQ
- What resolution source is used for elections?
- Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.
- Which platform has the deepest political liquidity?
- Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.
- Are political prediction markets legal in my country?
- It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.
- Why do Polymarket and Kalshi differ on elections?
- Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.
- Which political events have the biggest volume?
- US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.
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