TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: May 31, 2:00 PM EST
Kalshi
This market tracks whether either the Boston Red Sox or Cleveland Guardians will score a run during the opening inning of their matchup. On Kalshi, the probability of at least one run scoring in the first inning stands at 46.5%. The market resolves based on the official result of the game scheduled for May 31, 2026 at 1:40 PM EDT. Watch the teams' recent offensive performance and starting pitcher matchups leading into the May 31 game to gauge early-inning scoring likelihood.
On Kalshi, the Boston vs Cleveland First Inning Run market is priced as a binary contract reflecting the probability of at least one run scoring in the opening inning. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders buy YES contracts if they believe a run will score, or NO contracts if they expect a scoreless first inning. The price moves between 0 and 100 cents, with each cent representing a 1% probability increment. Kalshi's order book shows real-time bids and asks, allowing traders to execute at current market prices or place limit orders to wait for better fills.
The Boston vs Cleveland First Inning Run market resolves on May 31, 2026, following the completion of the first inning. The outcome is determined by whether at least one run crosses home plate during that inning, regardless of which team scores it. Once the first inning concludes and official scoring is confirmed, the market settles and all open positions are closed. Traders holding the winning side receive their payout based on the contract price at which they entered.
Several factors can shift odds for this market before game time and during the first inning. Starting pitcher announcements, bullpen availability, and recent offensive trends for both teams influence early trading. Weather conditions, field dimensions, and home-field advantage at the venue also matter. Once the game begins, each pitch, hit, and baserunner advances the narrative; early offensive pressure or defensive struggles can trigger sharp odds moves. Injury news or late lineup changes announced before first pitch can also cause significant repricing on Kalshi.