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Seattle Mariners vs. Athletics

Five-platform snapshot of "Seattle Mariners vs. Athletics" — live Polymarket pricing, plus how Kalshi, Betfair and Manifold structure the same contract.

50% YES 50% NO Volume: $412K Liquidity: $710K Closes: 3 Jun 2026
Trade on Kalshi UK →
Seattle Mariners vs. Athletics

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Kalshi UK Pick
polygram.ink
 50% 50% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Open on Kalshi UK →
Polymarket
polymarket.com
 50% 50% 0% Geo-blocked in US/UK/EU USDC, on-chain Open on Kalshi UK →
Kalshi
kalshi.com
 — — Up to 7% per trade US-only, KYC required USD Open on Kalshi UK →
Betfair Exchange
betfair.com
 — — 2-5% commission Full KYC from first trade GBP / EUR Open on Kalshi UK →
Manifold Markets
manifold.markets
 — — Play-money (mana) None — play-money Mana (no cash-out) Open on Kalshi 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 Kalshi UK.

Active sub-markets

Seattle Mariners vs. Athletics50% YES51% NO
NRFI54% YES46% NO
Spread -1.539% YES62% NO
O/U 9.549% YES52% NO
Spread -3.518% YES82% NO
Spread -2.525% YES76% NO

Market context

Live Polymarket data shows 50% YES probability for Seattle Mariners vs. Athletics. In the upcoming MLB game between the Seattle Mariners and Athletics, scheduled for May 26 at 9:40PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. This mark…

Live Data & Statistics

The Polymarket order book signals 50% probability for "Seattle Mariners vs. Athletics".

YES 50% NO 50%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $412K.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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.
What does it cost to trade on Kalshi UK?
Zero. Kalshi UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
Do I need to KYC for this market?
Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi 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.
James WilliamsJames WilliamsPrediction Market AnalystandDavid ParkDavid ParkSports Data Analyst

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