Detroit Tigers vs. Pittsburgh Pirates

Platform comparison

Market context

The Detroit Tigers face the Pittsburgh Pirates on 18 August at 6:40PM ET in a regular-season MLB matchup. The current crowd-implied probability of 42% for a Tigers victory sits notably below the typical sportsbook consensus, which has favoured Detroit in recent weeks. This divergence suggests either that prediction-market participants are pricing in late-breaking roster or pitching information, or that the conventional betting markets remain anchored to pre-season expectations that the crowd has already discounted.

Historical precedent matters here: the Tigers and Pirates have played 2,000+ times since 1901, with Detroit holding a slight career edge. However, recent seasonal form carries more weight than century-spanning records. The Pirates' late-August performance in 2024 and 2025 will be the relevant benchmark—teams in contention behave differently from those mathematically eliminated. Similarly, the Tigers' injury status in the week preceding this fixture could shift the implied probability substantially, particularly if key position players or starting pitchers are unavailable.

Traders should monitor roster announcements through 17 August, including any last-minute bullpen or lineup adjustments. Pitching matchups, typically confirmed 24–48 hours before game time, represent a critical catalyst; a surprise starter or unexpected absence could explain the current 42% figure if sportsbooks have already priced in information the broader prediction market has not yet fully absorbed. Weather conditions at the venue and any travel delays affecting either team should also be tracked, as these can influence performance in late-summer baseball.

Methodology

This page reviews Detroit Tigers 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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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.