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Seattle Mariners vs. Baltimore Orioles

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

50% YES 50% NO Volume: $798K Liquidity: $1K Closes: 17 Jun 2026
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Seattle Mariners vs. Baltimore Orioles

Platform comparison

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

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 Who Will Win.

Active sub-markets

1st 5 Innings O/U 2.550% Over51% Under
Extra Innings10% YES90% NO
Spread -1.50% Seattle Mariners100% Baltimore Orioles
O/U 9.50% Over100% Under
1st 5 Innings Spread -2.526% Baltimore Orioles75% Seattle Mariners
1st 5 Innings O/U 5.510% Over90% Under

Market context

Based on real-money crowd forecasting, seattle mariners vs. baltimore orioles stands at 50% likelihood according to current market consensus. In the upcoming MLB game between the Seattle Mariners and Baltimore Orioles, scheduled for June 10 at 6:35PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mari…

Live Data & Statistics

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

YES 50% NO 50%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $798K.

Methodology

We track Seattle Mariners vs. Baltimore Orioles on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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 Who Will Win, 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.
Is this market available outside the US?
Who Will Win 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.
What does it cost to trade on Who Will Win?
Zero. Who Will Win 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.
Do I need to KYC for this market?
Not under $1,500 of lifetime trading volume. Above that threshold, Who Will Win triggers a quick verification flow that finishes in minutes.
Oliver HughesOliver HughesBlockchain & Crypto ReporterandEmma RobertsEmma RobertsFinancial Journalist

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