New York Mets vs. Milwaukee Brewers

Platform comparison

Market context

The New York Mets and Milwaukee Brewers faced off in a Monday night MLB game at 7:40pm ET on 20 July 2026, with the Brewers heavily favoured to win. The contest has already concluded, and the official result shows the Brewers secured the victory, meaning the Mets did not win the game. This outcome aligns with the 0% crowd-implied probability for a Mets win, reflecting the market’s accurate pricing of the pre-game odds where the Brewers carried a -198 moneyline advantage [2].

Historically, MLB games with such a pronounced moneyline disparity rarely see the underdog win outright, especially when the favourite holds a -1.5 run line expectation. In comparable 2025–2026 interleague matchups, teams priced at -198 or lower won approximately 78% of the time, with the underdog covering only in cases of early pitching collapses or weather disruptions. The absence of any postponement or cancellation in this fixture removed the 50-50 tie resolution clause, cementing the Brewers’ win as the definitive settlement outcome [2].

Traders should monitor the official MLB final statistics page for the resolution source, as the governing body’s recorded result is the primary settlement trigger. No further catalysts apply post-game, but pre-match dependencies such as starting pitcher health and weather forecasts had already been priced into the odds. With the game completed and the result confirmed, the market will settle in USDC on btc-prediction.bet once the on-chain oracle confirms the Mets’ non-win status, closing the settlement window ahead of the 27 July deadline [1].

Sources: 1 · 2 · 3

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

Why USDC and not ETH or USDT?

USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.

What does a transaction cost on Polygon?

Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.

How does UMA secure the resolution?

The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.

How volatile are crypto prediction markets?

Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.

Which crypto markets exist on Polymarket?

Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.