Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Election Predictions UK Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Election Predictions UK → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Election Predictions UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Election Predictions UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Election Predictions UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Election Predictions 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 Election Predictions UK.
Active sub-markets
| Seattle Mariners vs. Washington Nationals | 0% Seattle Mariners | 100% Washington Nationals |
| NRFI | 100% YES | 0% NO |
| Spread -1.5 | 0% Seattle Mariners | 100% Washington Nationals |
| O/U 9.5 | 100% Over | 0% Under |
| 1st 5 Innings Spread -1.5 | 100% Washington Nationals | 1% Seattle Mariners |
| 1st 5 Innings Spread -2.5 | 0% Seattle Mariners | 100% Washington Nationals |
Market context
The Seattle Mariners face the Washington Nationals in an MLB regular-season matchup scheduled for 14 June 2026 at 1:35 PM Eastern Time. The current crowd-implied probability of 0% YES suggests traders are assigning negligible likelihood to a Mariners victory, though this figure warrants scrutiny given typical pre-game uncertainty in baseball wagering.
Historical precedent indicates that crowd probabilities of 0% in sports markets often reflect either extreme confidence in the opposing team or insufficient liquidity rather than genuine certainty. The Mariners' recent performance trajectory and roster composition relative to the Nationals' standing within their division will determine whether this probability reflects genuine analytical consensus or market inefficiency. Comparable MLB matchups between teams of disparate strength have occasionally seen dramatic probability shifts in the 48 hours preceding game time, particularly when injury reports or lineup confirmations emerge.
Traders should monitor official roster announcements and starting pitcher confirmations, typically released 24 hours before first pitch. Weather conditions at the scheduled venue and any last-minute managerial decisions regarding bullpen availability could shift expected win probabilities materially. Recent injury updates from either franchise, particularly affecting key offensive contributors or starting rotation depth, represent the primary catalysts likely to move this market before the settlement window closes on 21 June 2026. The settlement mechanism accounts for postponement or cancellation scenarios, resolving 50-50 in the event of no make-up game or tie result.
Methodology
This page tracks Seattle Mariners vs. Washington Nationals across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. Election Predictions UK routes every trade through to Polymarket — at 0% fees.
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
- Is this market available outside the US?
- Election Predictions 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.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, Election Predictions UK triggers a quick verification flow that finishes in minutes.
Trade Seattle Mariners vs. Washington Nationals on Election Predictions UK
Live order book, 0% fees, USDC settlement in seconds.
Trade on Election Predictions UK →