TOTAL VOLUME:
$134.1b
24H VOL:
$113,466,932
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,423,222,590
402,751
Markets across
30,217
events
MATCHED EVENTS:
2,632
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 18, 9:54 PM EST
Kalshi
A professional baseball game between New York and Philadelphia scheduled for June 18, 2026 will be monitored to determine if the teams play beyond the standard nine innings. The event focuses on whether this matchup will require extra innings to determine a winner.
If New York M and Philadelphia go to extra innings in the New York M vs Philadelphia professional baseball game originally scheduled for Jun 18, 2026 at 6:40 PM EDT, then the market resolves to Yes.
Prediction markets like Kalshi and traditional sportsbooks price events differently because they operate under distinct incentive structures. Sportsbooks set odds to balance their book and lock in profit margins, while prediction markets reflect aggregated trader beliefs competing for real money. This market's odds may diverge from sportsbook lines because traders here have direct financial exposure and can adjust positions continuously. Comparing this market's probability to major sportsbook lines can reveal where the crowd sees value or where consensus differs, though each venue attracts different participant pools with varying information and risk appetites.
On Kalshi, this market is priced through an order-book mechanism where traders submit bids and asks for shares representing yes or no outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price you see reflects the last matched trade, and you can place limit or market orders to enter or exit your position. As more traders participate and new information emerges, the equilibrium price adjusts to balance supply and demand. Kalshi's transparent order flow means you can observe depth and slippage before executing, helping you understand the true cost of moving the market in either direction.
This market resolves around Jun 19, 2026, once the Mets and Phillies game concludes and the result is verifiable from credible public reporting. The outcome hinges on whether the game extends into extra innings or concludes within regulation. Once the final score and inning count are confirmed through official sources, the market will settle automatically, paying out holders of the correct outcome. Until that point, prices will fluctuate as game conditions develop and traders adjust their positions based on live events and probabilities.
Several catalysts can shift this market's odds before resolution. Lineup announcements, bullpen availability, and weather conditions at game time all influence the likelihood of extra innings. In-game developments—such as score momentum, pitcher fatigue, or key injuries—will prompt traders to reassess and reposition. Historical head-to-head matchups and recent team performance trends may also drive early trading. As game time approaches, real-time updates on starting pitchers, field conditions, and pregame news will create volatility. Once play begins, each inning's outcome and the score differential will be the primary drivers of market movement.