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Seattle Mariners vs. Athletics

How the on-chain market is pricing "Seattle Mariners vs. Athletics" right now, plus comparison with Kalshi, Betfair and Manifold.

50% YES 50% NO Volume: $349K Liquidity: $248K Closes: 3 Jun 2026
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Seattle Mariners vs. Athletics

Platform comparison

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

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 BTC Prediction.

Active sub-markets

Spread -8.5—
Seattle Mariners vs. Athletics100% YES0% NO
NRFI100% YES0% NO
Spread -9.5—
Spread -2.599% YES2% NO
Spread -3.598% YES3% NO

Market context

Traders on decentralised prediction markets give 50% probability to seattle mariners vs. athletics. In the upcoming MLB game between the Seattle Mariners and Athletics, scheduled for May 27 at 3:05PM 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: $349K.

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

Where can I trade this market with the lowest fees?
On BTC Prediction, 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.
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, BTC Prediction 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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