Houston Astros vs. Detroit Tigers

Platform comparison

Market context

The Houston Astros face the Detroit Tigers at Comerica Park in Detroit on Sunday, 28 June 2026, with the game scheduled to begin at 1:40pm ET. The crowd-implied probability of 100% YES for the Astros suggests the market views the outcome as virtually certain, a stance that demands scrutiny when approached programmatically through conditional order bots or copy-trading scripts.

Historically, such extreme probabilities in MLB markets often precede volatility when underdogs possess home-field advantages or when pitching matchups are misjudged; for instance, in 2024, similar 98%+ odds for the Yankees against the Tigers collapsed after a late-inning bullpen failure [1]. The Tigers’ limited run support in interleague play and inconsistent road bullpen performance [1] contrast with the Astros’ probable starter Spencer Arrighetti’s 3.13 ERA, yet schedule fatigue and late-inning execution remain critical variables that could shift implied probabilities [1].

Traders monitoring this market programmatically should watch for real-time announcements on pitcher usage, bullpen depth, and any weather delays at Comerica Park, as these dependencies directly impact settlement logic. Recent box-score data confirms the Tigers’ home record (23-20) and the Astros’ away struggles (21-23), suggesting the 100% probability may overlook contextual fatigue factors [2]. Any delay or cancellation would keep the market open, while a tie or cancellation without a make-up game resolves 50-50, a clause that copy-trading bots must account for in risk models [1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Houston Astros vs. Detroit Tigers 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 Polymarket Bot UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

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 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.

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.