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Seattle Mariners vs. Washington Nationals

How the prediction-market book is pricing "Seattle Mariners vs. Washington Nationals" right now, with a side-by-side platform comparison and zero-fee CTAs.

1% YES 99% NO Volume: $709K Liquidity: $88K Closes: 21 Jun 2026
Trade on Polymarket KYC UK →
Seattle Mariners vs. Washington Nationals

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket KYC UK Pick
polygram.ink
1% 99% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Open on Polymarket KYC UK →
Polymarket
polymarket.com
1% 99% 0% Geo-blocked in US/UK/EU USDC, on-chain Open on Polymarket KYC UK →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Open on Polymarket KYC UK →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Open on Polymarket KYC UK →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Open on Polymarket KYC 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 KYC UK.

Active sub-markets

Seattle Mariners vs. Washington Nationals1% Seattle Mariners100% Washington Nationals
NRFI100% YES0% NO
Spread -1.51% Seattle Mariners99% Washington Nationals
O/U 9.535% Over66% Under
1st 5 Innings Spread -1.599% Washington Nationals1% Seattle Mariners
1st 5 Innings Spread -2.50% Seattle Mariners100% Washington Nationals

Market context

Traders on decentralised prediction markets give 1% probability to seattle mariners vs. washington nationals. In the upcoming MLB game between the Seattle Mariners and Washington Nationals, scheduled for June 14 at 1:35PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game…

Methodology

This page reviews Seattle Mariners 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 Polymarket KYC UK — 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

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, Polymarket KYC UK triggers a quick verification flow that finishes in 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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