Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket Tax UK Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Polymarket Tax UK → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Polymarket Tax UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Polymarket Tax UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Polymarket Tax UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Polymarket Tax UK → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Polymarket Tax UK.
Active sub-markets
| Spread -1.5 | 100% Miami Marlins | 0% San Francisco Giants |
| O/U 7.5 | 100% Over | 0% Under |
| 1st 5 Innings Spread -1.5 | 0% San Francisco Giants | 100% Miami Marlins |
| 1st 5 Innings Spread -1.5 | 100% Miami Marlins | 0% San Francisco Giants |
| 1st 5 Innings Spread -2.5 | 0% San Francisco Giants | 100% Miami Marlins |
| 1st 5 Innings Spread -2.5 | 100% Miami Marlins | 0% San Francisco Giants |
Market context
The San Francisco Giants are due to face the Miami Marlins at loanDepot park in Miami, with the listed start at 4:10 pm EDT and the market resolving on the official final result if the game is played to completion.[3][6] For accessibility, “no-KYC up to $1,500” means a small participant can usually trade without immediate identity verification, but that threshold is only a platform access feature; it does not change the underlying contract terms or the fact that local availability can still be constrained by jurisdictional rules.
The current 88% yes price sits in the context of a one-run Miami win on Friday night, 4-3, which narrows but does not eliminate short-term uncertainty because MLB outcomes are highly dependent on the day’s starting pitchers, bullpen usage and late lineup changes.[1][3] The Giants enter with a weaker record than Miami in the MLB preview, which helps explain why the crowd has pushed the favourite side so hard, though a single game remains volatile enough that pre-game probability can move sharply on confirmed line-ups and pitching announcements.[3]
From a regulatory and tax perspective, the main points are about access and reporting rather than the match itself. Germany’s GlüStV regime can restrict or complicate access to prediction markets for residents, while the US CFTC’s reach matters because event contracts may be treated as derivatives depending on structure and venue, so traders commonly have to consider both where they are located and where the platform is regulated. For this market, the practical catalyst is straightforward: any postponement, cancellation, or make-up scheduling would affect settlement timing, and the market can stay open until the game is actually completed under the stated rules.[3]
Methodology
We track San Francisco Giants vs. Miami Marlins on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Is this market available outside the US?
- Polymarket Tax UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- 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.
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