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Seattle Mariners vs. Tampa Bay Rays

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

1st 5 Innings O/U 2.5 75% 1st 5 Innings O/U 3.5 62% NRFI 49% 1st 5 Innings O/U 4.5 49% Volume: $114K Liquidity: $718K Closes: 17 Jul 2026
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Seattle Mariners vs. Tampa Bay Rays

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Best Prediction Markets UK) Pick
polygram.ink (preferred broker)
 75% 25% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle View on Polymarket →
Polymarket (direct)
polymarket.com
 75% 25% 0% Geo-blocked in US/UK/EU USDC, on-chain View on Polymarket →
Kalshi
kalshi.com
 — — Up to 7% per trade US-only, KYC required USD View on Polymarket →
Betfair Exchange
betfair.com
 — — 2-5% commission Full KYC from first trade GBP / EUR View on Polymarket →
Manifold Markets
manifold.markets
 — — Play-money (mana) None — play-money Mana (no cash-out) View on Polymarket →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
1st 5 Innings O/U 2.575%
1st 5 Innings O/U 3.562%
NRFI49%
1st 5 Innings O/U 4.549%
Seattle Mariners vs. Tampa Bay Rays48%
O/U 8.547%
1st 5 Innings O/U 5.538%
Spread -1.537%
Spread -1.535%
1st 5 Innings Spread -1.532%
1st 5 Innings Spread -1.528%
1st 5 Innings O/U 6.525%
1st 5 Innings Spread -2.521%
1st 5 Innings Spread -2.517%
Extra Innings8%

Market context

Seattle Mariners vs. Tampa Bay Rays — current market-implied probability: 75%. In the upcoming MLB game between the Seattle Mariners and Tampa Bay Rays, scheduled for July 10 at 7:10PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. Thi…

Live Data & Statistics

The Polymarket order book prices 1st 5 Innings O/U 2.5 at 75% for "Seattle Mariners vs. Tampa Bay Rays".

1st 5 Innings O/U 2.5 75% Other 25%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $114K.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.

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

Is this market available outside the US?
Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
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 Polymarket cost to trade?
Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
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?
On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Emma RobertsEmma RobertsFinancial JournalistandSarah MitchellSarah MitchellPolitical Markets Writer

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