Brazil trailed Japan 1-0 at halftime in the 2026 World Cup round of 16 before Carlo Ancelotti's unconventional substitutions flipped the match. Endrick and a surprise Gabriel Martinelli entry sparked a 2-1 comeback, with Martinelli netting the 90th-minute winner. The Italian's boldest call, however, was keeping 34-year-old Casemiro on the pitch despite a poor first half and a yellow card. The veteran responded with the equalizing header, vindicating a coach who trusts instinct over convention.

Casemiro's recall a year ago transformed Brazil's structure, unlocking Bruno Guimarães as an attacking force. Yet a structural flaw persists. Against Panama in May, the Casemiro-Guimarães pivot was bypassed repeatedly, forcing Ancelotti to add Lucas Paquetá as a third midfielder. Now Paquetá is injured, leaving a void for Sunday's clash with Norway in New Jersey. Danilo Santos appears the likeliest replacement, though a return to four forwards remains possible.

The Norway test centers on Casemiro versus Martin Ødegaard, the creative hub feeding Erling Haaland. Casemiro's yellow card adds suspension risk — a repeat of 2018's quarterfinal absence looms. Fabinho offers experience but lacks defensive bite, and Andrey Santos's omission leaves the squad thin. Ancelotti's tournament hinges on managing this dilemma: when to act, when to wait, and whether his faith in Casemiro holds against the world's premier striker.