Kansas City Royals vs. Tampa Bay Rays

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Active sub-markets

Market context

The underlying event is an MLB game between the Kansas City Royals and the Tampa Bay Rays, scheduled for 23 June at 6:40pm ET in St Petersburg, Florida. The market currently implies a mere 5% chance that the Royals win, a stark contrast to the 40.4% win probability assigned by broader betting analytics[4]. This extreme divergence mirrors historical cases where home dominance is priced aggressively into moneylines, often overshadowing the visiting team’s road form despite comparable offensive outputs[1]. In such scenarios, the market frequently overreacts to a single strong home record, creating a mispricing that only corrects once the game’s actual dynamics unfold.

Traders should monitor the pitching performances of Luinder Avila for the Royals and Shane McClanahan for the Rays, as Avila’s 1.80 ERA on the road contrasts sharply with his 12.79 ERA elsewhere, suggesting a potential volatility catalyst[6]. McClanahan’s recent allowance of 10 runs in limited innings further adds uncertainty to the Rays’ favoured status[6]. The market leans heavily on Avila’s road reliability as the primary pivot; if he falters, the 5% Royals probability may collapse further, whereas a strong outing could trigger a rapid poll movement toward the 40% baseline. Recent coverage from MLB.com highlights these pitching dependencies as the decisive factor for this matchup[6]. No other announcements or scheduled debates are expected to influence the outcome beyond these on-field variables.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Kansas City Royals vs. Tampa Bay Rays 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. Election Predictions UK 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

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 Election Predictions UK?

Zero. Election Predictions 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.

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.