TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 25, 8:35 PM EST
Kalshi
This event group covers halftime results for the Philadelphia Union vs. Seattle Sounders FC MLS match scheduled for July 25, 2026. Polymarket offers three binary markets (Philadelphia leading, draw, Seattle leading at halftime), while Kalshi offers three over/under markets on combined first-half goals (>0.5, >1.5, >2.5). The markets measure different dimensions: head-to-head outcome vs. goal volume.
In the upcoming MLS game between Philadelphia Union and Seattle Sounders FC, scheduled for July 25, 2026 at 7:30 PM ET: This event contains halftime result markets for home, draw, and away outcomes within the first 45 minutes of regular play plus stoppage time.
Resolution is based on the total goals scored by both Philadelphia and Seattle combined during the first half of their professional MLS soccer game originally scheduled for July 25, 2026. Only goals scored during the first half count toward this event. The event encompasses three distinct outcomes: total goals exceeding 0.5, exceeding 1.5, and exceeding 2.5. If the game is cancelled or rescheduled to more than two weeks away, the market will resolve to a fair price in accordance with the rules.
Prediction markets like those on Polymarket and Kalshi derive odds directly from trader activity rather than bookmaker margins. Because traders risk real capital and compete for accuracy, these odds often reflect sharper probability estimates than traditional sportsbooks, which build in a house edge. Sportsbooks also adjust lines to balance action, whereas prediction markets move purely on supply and demand. For halftime results, prediction market pricing can reveal early-game expectations that sportsbooks may lag in updating, especially as team lineups and weather conditions become clearer closer to kickoff.
Team news has outsized impact: confirmed absences of key forwards or defenders shift halftime scoring expectations sharply. Weather conditions—rain, wind, or extreme heat—affect passing accuracy and pace, moving odds on goal totals. Early tactical adjustments or formation changes announced before kickoff can trigger repricing as traders reassess attacking and defensive balance. Scouting reports, recent form streaks, and head-to-head history also influence sentiment. As the match begins, live action—early chances, fouls, or momentum swings—will drive rapid repricing until halftime arrives and the market settles.