Saltillo, Sá Pinto, and Ronaldo: Portugal's biggest controversies through the years (Photos)

Cristiano Ronaldo walked out of Portugal's training session on Wednesday, their final workout before facing Denmark in round 3 of UEFA Nations League Group A4. While the captain's future remains uncertain, the incident has already sparked one of the biggest controversies surrounding the national team in recent times.

From the Saltillo affair to the 2022 World Cup, the Seleção have never been immune to high-profile drama. From Sá Pinto's infamous assault on Artur Jorge to Luiz Felipe Scolari's confrontation and Ricardo Carvalho walking out of camp, explore 10 other major controversies in Portugal's history in the gallery below.