Boston Red Sox vs. Kansas City Royals

Platform comparison

Active sub-markets

Market context

The Boston Red Sox and Kansas City Royals were due to meet in MLB action on 19 May, with the market settling on the actual winner once the game is completed. With the crowd-implied probability at 0% YES, the contract is effectively pricing no established view yet, which is unusual for a scheduled baseball result and means any movement will likely come from line-up, pitching, or postponement news rather than sentiment alone.

For framing, baseball markets tend to reset sharply when a starting pitcher is confirmed or changed, and they can move quickly if the game is delayed or rescheduled because settlement depends on the completed result. Recent betting coverage had Boston as a modest moneyline favourite, with one preview listing the Red Sox around -130 against Kansas City, while Oddschecker and DraftKings were also showing active pre-game prices rather than a frozen or suspended market. That sort of pricing is more informative than the headline probability here: if the game goes ahead as scheduled, the main catalyst remains the confirmed line-up and probable pitchers, not any broader series narrative.

Traders should watch for official MLB postponement updates, any late scratches, and the final score from the rescheduled or completed game, since a cancellation with no make-up would force a 50-50 settlement. For context, market-moving information on the game itself has been coming from sportsbook pricing and betting previews rather than a polling-style source, so the best near-term guide is the live odds rather than any external consensus.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Boston Red Sox vs. Kansas City Royals across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. PolyGram routes every trade through to Polymarket — at 0% fees.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

Is this market available outside the US?

PolyGram 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.

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 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.

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.