Cincinnati Reds vs. New York Yankees

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Market context

The Cincinnati Reds face the New York Yankees in a 1:35PM ET MLB clash on Sunday, 21 June 2026, with the Reds currently priced as underdogs. On Polymarket, this contract sits at 37% YES for a Reds win, implying a 63% chance for the Yankees. The odds align with traditional bookmakers, where the Reds are listed at +162 and the Yankees at -196, reflecting the Yankees' superior season form with a 46-29 record compared to the Reds' 36-39 standing[2].

Historically, similar mid-season matchups between a top-four offensive team and a struggling 19th-ranked run-scoring squad often see the market heavily favour the home side. The Yankees average 5.22 runs per game while the Reds manage just 4.20, a gap that has consistently driven conditional token prices towards the home team in past Polygon-based prediction markets[9]. When the spread is set at 1.5 runs for the home favourite, the implied probability for the home win typically exceeds 60%, matching the current 37% implied probability for the Reds[3].

Traders should monitor the starting pitcher announcements for Arroyo, who recently delivered a four-hit performance, and the Yankees' rotation, as any late injury news could shift USDC liquidity significantly[7]. The game total is set at 8.5 runs, and if the Reds fail to score early, the conditional tokens for the Yankees will likely appreciate as the clock ticks past the first five innings[5]. Recent analysis from Doc Sports suggests the edge swings heavily towards the Yankees, particularly if the Reds cannot capitalise on early opportunities[1].

Sources: 1 · 2 · 3 · 4 · 5

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

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

Where can I trade this market with the lowest fees?

On Kalshi UK, 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.

Is this market available outside the US?

Kalshi UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 Kalshi UK?

Zero. Kalshi UK 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.