Houston Astros vs. Detroit Tigers

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Active sub-markets

Market context

The Houston Astros and Detroit Tigers face off at Comerica Park on Saturday, 27 June 2026, at 1:10pm ET in a decisive MLB matchup where the winner is the sole resolution for the prediction market. With the crowd-implied probability favouring the Astros at 51% YES, the market sits slightly above the sportsbook moneyline of -105 for Houston, which translates to roughly a 51.2% chance, yet diverges sharply from analyst consensus that leans heavily toward the Tigers. Recent models from Yahoo Sports and independent pickers like Jason Sharpe explicitly recommend the Tigers on the moneyline, creating a notable friction between the prediction market’s slight Astros bias and the broader betting community’s confidence in Detroit’s victory.

Historically, such 50–52% implied probabilities in MLB games often resolve to the underdog when sharp money flows against the public, mirroring patterns seen in late-June contests where pitching rotations shift unexpectedly. In comparable cases, a 38% public vote against a side paired with 62% money backing it (as seen in current Sportsline data for this game) signals that serious bettors are favouring the Tigers, suggesting the 51% Astros probability may be an overreaction to home-field perception rather than actual win likelihood. Traders should monitor the starting pitcher announcements for both teams, as any late change to the rotation could invalidate the current odds, and watch the run-line movement, which currently sits at Astros -1.5, indicating expectations of a narrow margin. A recent Fox Sports boxscore preview confirms the total is set at 8.5 runs, meaning a high-scoring game could swing the outcome if the Tigers’ offence outperforms the Astros’ pitching, a dependency that remains critical until the final whistle.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track 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 Best Prediction Markets, 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?

Best Prediction Markets 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.

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 Best Prediction Markets?

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

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.