The expanded 48-team format for the 2026 FIFA World Cup, with 12 groups of four and the top two plus eight best third-placed sides advancing to the Round of 32, increases advancement odds compared to prior editions. Squad depth, recent international form, and head-to-head results within groups will shape outcomes, as three points for a win and tiebreakers like goal difference and fair play points determine rankings. Host nations benefit from home matches and crowd support, while European and South American sides often leverage superior attacking records. With group stage fixtures beginning June 11, fitness levels, travel across North America, and any late roster adjustments remain key variables affecting implied probabilities in related markets.