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Boston Red Sox vs. Athletics

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

1st 5 Innings O/U 2.5 81% 1st 5 Innings O/U 3.5 69% Boston Red Sox vs. Athletics 63% O/U 8.5 61% Volume: $123K Liquidity: $1.5M Closes: 4 Aug 2026
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Boston Red Sox vs. Athletics

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Who Will Win 2026) Pick
polygram.ink (preferred broker)
 81% 19% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle See live odds →
Polymarket (direct)
polymarket.com
 81% 19% 0% Geo-blocked in US/UK/EU USDC, on-chain See live odds →
Kalshi
kalshi.com
 — — Up to 7% per trade US-only, KYC required USD See live odds →
Betfair Exchange
betfair.com
 — — 2-5% commission Full KYC from first trade GBP / EUR See live odds →
Manifold Markets
manifold.markets
 — — Play-money (mana) None — play-money Mana (no cash-out) See live odds →

Outcome probabilities

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

OutcomeProbability
1st 5 Innings O/U 2.581%
1st 5 Innings O/U 3.569%
Boston Red Sox vs. Athletics63%
O/U 8.561%
1st 5 Innings O/U 4.556%
NRFI54%
Spread -1.552%
O/U 9.551%
1st 5 Innings O/U 5.545%
O/U 10.543%
Spread -2.541%
1st 5 Innings Spread -1.538%
1st 5 Innings O/U 6.534%
Spread -1.524%
1st 5 Innings Spread -1.523%
Spread -2.517%
Extra Innings9%

Market context

The Boston Red Sox vs. Athletics prediction market currently prices this outcome at 81% YES. In the upcoming MLB game between the Boston Red Sox and Athletics, scheduled for July 27 at 9:40PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game. This market wi…

Live Data & Statistics

The Polymarket order book prices 1st 5 Innings O/U 2.5 at 81% for "Boston Red Sox vs. Athletics".

1st 5 Innings O/U 2.5 81% Other 19%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $123K.

Methodology

This page reviews Boston Red Sox vs. Athletics across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win 2026, which mirrors the Polymarket order book at 0% fees.

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.
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 Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
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.
Jordan LeeJordan LeeSports Prediction ReporterandChris ReedChris ReedPolitical Forecasting Editor

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