Cincinnati Reds vs. New York Mets

Platform comparison

Active sub-markets

Market context

The Cincinnati Reds travel to New York to face the Mets on 25 May at 4:10PM ET in a regular-season National League matchup. The current crowd-implied probability of 44% for a Reds victory suggests modest favouring of the home side, though this probability varies meaningfully across platforms. Polymarket's interface displays this as a decimal equivalent (approximately 1.79 for Reds moneyline), whilst Kalshi presents the same underlying probability in percentage terms; Betfair and Smarkets typically quote fractional odds, which can obscure direct probability comparison for casual traders unfamiliar with conversion. Fee structures diverge notably: Kalshi charges a flat 2% on net winnings, Polymarket takes 2% on both sides, and Betfair's commission scales with volume, making single-game MLB bets relatively expensive on the latter platform.

Seasonal context matters considerably here. The Reds finished 2024 at 82–80, whilst the Mets posted 86–76; both clubs occupy middling playoff probability ranges entering 2025. Recent roster changes and injury status—particularly starting pitcher availability—drive daily probability shifts that traders should monitor through official MLB injury reports and team announcements. The settlement window extends to 1 June 2026, an unusually long tail that reflects the postponement clause; if weather forces a delay beyond the standard make-up window, this market remains open until completion, creating potential liquidity gaps that differ from Betfair's standard early-close protocols on postponed events.

Methodology

We read Cincinnati Reds vs. New York Mets from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

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.

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 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.

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.