Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
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 PolyGram.
Active sub-markets
| Spread -3.5 | 0% YES | 100% NO |
| Spread -2.5 | 0% YES | 100% NO |
| Spread -4.5 | 0% YES | 100% NO |
| O/U 7.5 | 0% YES | 100% NO |
| Spread -1.5 | 0% YES | 100% NO |
| O/U 8.5 | 0% YES | 100% NO |
Market context
The Mets host the Nationals at Citi Field in a divisional MLB game, with the market set on the result after the first scheduled nine innings plus any necessary extra innings. A 1% crowd-implied chance for New York is effectively a near-zero line, so it is best read as an outlier rather than a meaningful forecast of the matchup. In comparable MLB moneylines, probabilities this low usually reflect a broken or stale market, a feed issue, or a suspended listing rather than a genuine expectation that one side is almost certain to lose.
The main things to watch are the confirmed line-ups, any late pitching change, and whether the game is completed on the scheduled night or rolled into a make-up date. Official team announcements close to first pitch can matter more than season-long form when a market is this thin, particularly if either club rests regulars or scratches a starter. If the game is postponed, the market stays open until it is completed; if it is cancelled entirely, or ends in a tie, it resolves 50-50 under the stated rules.
Methodology
This page reviews New York Mets vs. Washington Nationals across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.
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
- Where can I trade this market with the lowest fees?
- On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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 does it cost to trade on PolyGram?
- Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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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