The 2026 FIFA World Cup begins June 11, with national teams racing to finalize their 26-player rosters. FIFA required provisional squads of 35-55 players by May 11, though most countries keep these lists private until the official June 2 deadline. Mexico and Czechia were among the first to announce preliminary selections, showcasing deep talent pools across multiple positions.

Bosnia-Herzegovina became the first nation to confirm its final 26-man squad on May 11, featuring veteran striker Edin Dzeko leading the attack alongside goalkeeper Nikola Vasilj. Qatar followed with their provisional roster under new manager Julen Lopetegui, while Brazil's star-studded preliminary list includes Alisson, Casemiro, and Vinícius Júnior.

The tournament's expanded format across North America adds complexity to squad selection, with teams balancing experienced veterans against emerging prospects. Mexico's Javier Aguirre faces difficult decisions trimming his extensive provisional roster, particularly in midfield where Luis Romo and Orbelín Pineda compete for spots alongside young talents like Obed Vargas.