Canada coach Jesse Marsch expressed outrage Friday, saying Vancouver Whitecaps players had been "poisoned" during their visit to Mexico for the CONCACAF Champions Cup final.

The Whitecaps canceled practice Wednesday and had a modified session for cleared players Thursday after players and staff reported gastrointestinal symptoms. The Whitecaps are scheduled to play the Seattle Sounders in a Cascadia Cup rivalry match at BC Place on Sunday.

The teamwide illness caps a disappointing week for the Whitecaps, who saw their impressive 15-game unbeaten streak across all competitions come to a crushing end with a resounding 5-0 defeat to Cruz Azul in Saturday’s Champions Cup final. Vancouver had been hoping to capture its first major continental trophy.