Houston Astros vs. Minnesota Twins

Platform comparison

Active sub-markets

Market context

The Houston Astros play the Minnesota Twins at Target Field on 20 May, with the market settling on the winner of that game. The headline number is effectively split: recent sportsbook feeds had Minnesota a narrow home favourite, with totals around 8.5 to 9 runs and moneylines clustered close to even, which helps explain why a 0% Houston price looks more like an illiquid book than a true zero chance. For a market like this, depth often comes from small, repeat deposits rather than large one-off positions, so payment friction matters: faster on-ramps such as Klarna, SEPA and USDC can support thinner spreads and quicker repricing than cards or slower bank rails.

Recent form also argues against treating the market as settled. ESPN’s game page had the series level at 1-1 and showed Houston around 20-31 overall, with Minnesota near 22-27, while the previous night’s box score from FOX Sports shows the Twins winning the opener and the total pushing. That kind of split result is typical of short baseball series, where one pitching matchup can swing the next game more than season records do. Comparable markets in MLB often move sharply after line-up releases or starter confirmations, especially when the open sits near a pick’em and the order book is thin.

The main catalysts are the official starting pitchers, line-ups, and any late injury or rest news before first pitch, as these will usually do more to the implied probability than broad team form. Traders will also watch whether the game starts on time and whether any weather or schedule change pushes settlement towards a postponed or make-up scenario. In markets with on-ramp friction, the pace of new money can be uneven: deposits cleared through SEPA or USDC can reach the book faster than card-funded balances, which can matter when a low-liquidity price is being tested in the final hours before the game.

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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 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.

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 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.

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, PolyGram triggers a quick verification flow that finishes in minutes.