Pronóstico: Houston Astros vs. Detroit Tigers

Platform comparison

Active sub-markets

Market context

The upcoming MLB clash between the Houston Astros and Detroit Tigers, scheduled for Friday 26 June at 6:40pm ET at Comerica Park, presents a stark on-chain reality: the Polymarket contract for a Houston Astros win currently trades at 0% implied probability. This pricing reflects the market’s conviction that the Tigers are the dominant side, a view echoed by traditional betting odds where Detroit sits as a -118 moneyline favourite against the Astros, who are listed at -105[1][2]. The conditional tokens on Polygon, settled in USDC, are effectively pricing in a near-certain Detroit victory, with the over/under set at 9.0 runs, suggesting a high-scoring affair where the Tigers’ offensive output is expected to prevail[1][6].

Historically, such extreme 0% pricing on Polymarket for a home team in a mismatch often mirrors cases where the visiting squad is significantly depleted or facing a superior pitching rotation, as seen in previous MLB games where the favourite’s win probability exceeded 70% in AI models[4]. In comparable scenarios, the market has rarely corrected unless a late injury or weather delay intervened, meaning traders should treat this 0% line as a robust signal rather than a fleeting anomaly. The Astros’ current record of 40-43, sitting second in the AL West, contrasts with the Tigers’ 34-47 standing, yet the betting lines and predictive models heavily favour Detroit, reinforcing the on-chain consensus[3][4].

Traders must monitor the official starting lineups announced before first pitch, as any late withdrawal of a key Tigers pitcher could shift the conditional token values, though current odds remain stable[1]. Additionally, weather updates for Detroit are critical; rain delays could postpone the game, keeping the market open until completion, while a cancellation would resolve the contract at 50-50[1]. Recent analysis from CBS Sports confirms Detroit’s status as the -118 favourite, with no immediate news suggesting roster changes that would alter this trajectory, so the 0% Houston price appears firmly grounded in the pre-game data[6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Pronóstico: Houston Astros vs. Detroit Tigers 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 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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.