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Boston Red Sox vs. Pittsburgh Pirates

How the prediction-market book is pricing "Boston Red Sox vs. Pittsburgh Pirates" right now, with a side-by-side platform comparison and zero-fee CTAs.

O/U 2.5 100% O/U 1.5 100% Boston Red Sox vs. Pittsburgh Pirates 99% Spread -1.5 94% Volume: $143K Liquidity: $383K Closes: 22 Aug 2026
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Boston Red Sox vs. Pittsburgh Pirates

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via PolyGram) Pick
polygram.ink (preferred broker)
100% 0% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Open the market →
Polymarket (direct)
polymarket.com
100% 0% 0% Geo-blocked in US/UK/EU USDC, on-chain Open the market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Open the market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Open the market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Open the market →

Outcome probabilities

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

OutcomeProbability
O/U 2.5100%
O/U 1.5100%
Boston Red Sox vs. Pittsburgh Pirates99%
Spread -1.594%
Spread -2.586%
Extra Innings50%
Spread -3.550%
O/U 3.548%
O/U 4.525%
O/U 5.512%
O/U 6.59%
O/U 7.53%
Spread -1.53%
O/U 8.53%
Spread -2.52%
NRFI0%
1st 5 Innings Spread -1.50%
1st 5 Innings Spread -1.50%
1st 5 Innings O/U 2.50%
1st 5 Innings O/U 3.50%
1st 5 Innings O/U 4.50%
1st 5 Innings O/U 5.50%
1st 5 Innings O/U 6.50%

Market context

The Boston Red Sox face the Pittsburgh Pirates on 15 August at 7:15PM ET in a regular-season MLB matchup. Polymarket currently prices this contract at 99% YES, reflecting overwhelming confidence in a Red Sox victory. The conditional token structure on Polygon means traders holding YES tokens receive full USDC payout if Boston wins; NO holders receive nothing. This extreme pricing suggests the market has incorporated substantial information asymmetry regarding team strength, recent form, or roster availability.

Historical precedent offers context for reading this probability. MLB games rarely settle at 99% confidence except when facing exceptional circumstances—a team missing multiple star players to injury, a matchup between a playoff contender and a rebuilding side, or late-season scenarios where one club has mathematically eliminated the other. The Red Sox and Pirates occupy different competitive tiers; Boston has consistently fielded playoff-calibre rosters whilst Pittsburgh has endured extended rebuilding phases. However, single-game outcomes retain inherent volatility; even heavily favoured teams lose roughly 5–10% of their games against weaker opponents across a full season.

Traders should monitor roster announcements through 15 August, particularly regarding Boston's starting pitcher assignment and any late-breaking injuries. Weather conditions at PNC Park—wind direction and temperature affecting fly ball carry—can shift expected run production. The Pirates' recent offensive output and whether they field their full lineup will influence run-scoring projections. Settlement occurs 22 August at 23:15 UTC; postponements keep the market open until completion, whilst cancellations without rescheduling trigger 50-50 resolution. The settlement window provides ample time for game completion under standard MLB scheduling.

Live Data & Statistics

The Polymarket order book prices O/U 2.5 at 100% for "Boston Red Sox vs. Pittsburgh Pirates".

O/U 2.5 100% Other 0%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $143K.

Methodology

This page reviews Boston Red Sox vs. Pittsburgh Pirates 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 PolyGram, which mirrors the Polymarket order book at 0% fees.

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

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.
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 PolyGram 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.
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Related Topics

Sports