Switzerland's supreme court granted an interim order to freeze Guerrero's 14-month ban for a positive test for cocaine metabolites at a World Cup qualifying game.
“As a result, Paolo Guerrero can take part in the next World Cup,” the federal court said, noting the tournament could be “without any doubt the crowning glory of his career.”
Guerrero's urgent request to the federal court was helped by FIFA and the World Anti-Doping Agency, according to the court.
She also noted a possible negative effect on Guerrero's teammates of being deprived of their “emblematic” captain.
The verdict came four days ahead of FIFA's Monday deadline for Peru to finalize its 23-man World Cup squad.