Milwaukee Brewers vs. Houston Astros

Platform comparison

Active sub-markets

Market context

The Milwaukee Brewers travel to Houston for a daytime matchup against the Astros on 31 May at 2:10 PM ET. Polymarket currently prices a Brewers victory at 22%, implying the Astros as 78% favourites. This pricing reflects Houston's stronger regular-season positioning and home-field advantage, though the 2:10 PM start time—earlier than typical evening fixtures—introduces variables around roster availability and travel fatigue that traders should factor into their USDC positions on Polygon.

Historically, the Astros have dominated this matchup in recent seasons, winning roughly 60% of games against Milwaukee since 2020. However, the Brewers' pitching depth has occasionally produced upset performances in day games, particularly when Houston's rotation lacks depth or faces unexpected injuries. The current 22% probability sits slightly above the Brewers' season win-rate against comparable opponents, suggesting modest confidence in Houston's superiority rather than overwhelming certainty.

Traders monitoring this contract should watch for late-breaking roster announcements—specifically any injuries to Houston's starting pitcher or Milwaukee's primary hitters—which typically surface 24 hours before first pitch. Weather conditions at Minute Maid Park, particularly wind direction affecting fly-ball distances, can shift outcomes in low-scoring affairs. Recent form matters: checking both teams' last five games and bullpen usage patterns heading into 31 May will clarify whether the current odds adequately reflect momentum shifts. The settlement window extends to 7 June, allowing time for postponements, though conditional token mechanics on Polymarket mean any delay simply extends the resolution date without affecting the underlying contract structure.

Methodology

We track Milwaukee Brewers vs. Houston Astros 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

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

Where can I trade this market with the lowest fees?

On Polymarket Scam?, 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?

Polymarket Scam? 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.

Do I need to KYC for this market?

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