Milwaukee Brewers vs. Houston Astros

Platform comparison

Active sub-markets

Market context

The Milwaukee Brewers travel to Houston on 31 May for a regular-season matchup against the Astros, with the market currently pricing a Brewers victory at 38 per cent. This implies the Astros are favoured at 62 per cent, reflecting Houston's stronger recent form and home-field advantage. The settlement window extends to 7 June, allowing for postponements typical of late-spring weather patterns in Texas.

Historically, the Brewers have competed evenly with Houston in recent seasons, though the Astros' 2024 roster construction—anchored by their established core—has delivered consistent regular-season performance. Home teams in May typically capture 52–54 per cent of wins across MLB, a modest but measurable edge. The current 38 per cent for Milwaukee suggests the market is pricing in both Houston's home advantage and recent divisional standing, though the Brewers remain competitive in the National League Central.

Key variables for traders include starting pitcher matchups and injury updates, which often shift significantly in the 48 hours before game time. Recent roster moves or bullpen availability can swing win probability by 3–5 percentage points. Weather conditions at Minute Maid Park—particularly humidity and wind direction—occasionally favour certain team profiles. Monitor official MLB injury reports and team announcements through 30 May, as late scratches or roster adjustments frequently alter consensus pricing in the final trading window.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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 Who Will Win, 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.

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.

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.

Do I need to KYC for this market?

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