New York Mets vs. Chicago White Sox

Platform comparison

Market context

The New York Mets faced the Chicago White Sox on 22 August in a game that sat close to a coin flip in the betting market, with sportsbook prices generally around White Sox -104 to -118 and Mets +100 to +114, while one live board also showed Chicago -106 and New York +156 on the opposite side of the line structure.[1][2][3] That is materially tighter than the 81% crowd-implied YES price on the contract, which leaves the market leaning far more strongly to a Mets win than the wider betting market did at the time.[1][2][3]

For context, a Mets price in the low-50s at the sportsbooks would usually align with a near-even matchup rather than an 81% favourite, so the contract appears to be trading well above the consensus game-line view.[1][2][4] Comparable MLB prediction markets often tighten late if the lineup card or starting pitcher news moves the moneyline, but when the sports books stay clustered near pick’em, the more extreme contract price is typically harder to justify without a major edge in team news or a sharp injury read.[2][4]

The main catalysts to watch were the confirmed line-up and any late scratch news, plus whether either club’s injury list shifted before first pitch. The Mets’ recent injury list included Juan Soto, Jorge Polanco, Mark Vientos and several pitchers, whilst the White Sox were also dealing with absences including Joey Bart, Kyle Teel and Davis Martin, which could matter more than the pre-game consensus if any were ruled in or out late.[3] If the game were postponed, the contract would stay open until completion; if cancelled or tied, it would resolve 50-50.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews New York Mets vs. Chicago White Sox 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 Best Prediction Markets, 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.