As sports fans, we want to believe that athletes are clean, and that national and international authorities will work with sport governing bodies to preserve the integrity of sport. Clean athletes deserve to compete knowing that their rivals have not gained unfair advantage by the use of performance-enhancing drugs or blood doping. The Spanish court order to destroy blood bags collected in Operacion Puerto protects dopers, and severely undermines the integrity of sport. Even clean Spanish athletes now compete under a cloud of suspicion due to the secrecy around these samples. We the undersigned petition the Spanish authorities to block the destruction of evidence, and to hand it over to the international and Spanish anti-doping organisations, WADA and AEA.