World Anti-Doping Agency will introduce biological passports to combat doping in football . Global sport has been rocked by several recent doping scandals . FIFA calls for team sports to introduce biological passports . 456 samples taken from 114 of the 114 qualifying matches for Spain 2014 FIFA World Cup .
FIFA will introduce biological passports to combat doping in football . Global sport has been rocked by several recent doping scandals . World Anti-Doping Agency calls for team sports to introduce biological passports . 456 samples taken from 114 of the 820 qualifying matches for Brazil 2014 World Cup .