Pittsburgh Pirates vs. Toronto Blue Jays

Platform comparison

Active sub-markets

Market context

Pittsburgh visit Toronto on 22 May, with the Blue Jays listed as the home side at Rogers Centre and the market currently pricing the Pirates at 41% to win. That sits below ESPN’s game page, which shows Toronto at 54.8% and Pittsburgh at 45.2%, so the crowd price is slightly more sceptical of the Pirates than the broader pre-game market. The historical head-to-head also leans Toronto: StatMuse has the Blue Jays 7-3 in the last 10 meetings, while Pittsburgh did beat Toronto 5-2 in August 2025, a reminder that recent form in this matchup has not been one-way.

For traders, the main catalysts are the line-up cards, the starting pitcher announcement, and any late scratch news, especially because MLB prices can move sharply once batting orders are confirmed. The only recent game-specific note in the search results is Toronto’s 3-0 win over San Diego on 21 May, including George Springer’s solo homer, which may support a modest home-field read if the Blue Jays carry that form forward. ESPN’s odds page suggests the market sees only a narrow edge either way, so any divergence between sportsbook movement and the prediction market is likely to come from pitcher confirmation, travel/rest factors, or late injury news rather than from a large underlying mismatch in team strength.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Pittsburgh Pirates vs. Toronto Blue Jays 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 PolyGram, 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?

PolyGram 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.

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'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 it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.