I did my dissertation on anti-doping and don't have any faith in the top level of athletics, cycling etc, but we care mainly about football.....
One interesting bit of research I did though was in to Eufemiano Fuentes, a Spanish doctor who was working at a few of their clubs, including Real Sociedad when Xabi Alonso was there. Anyway, he's been under numerous court cases and whatever, then last year he was sentenced to 1 year in prison and a 4 year ban from practising sports medicine (lifetime surellyyyyyy?????) for being involved with doping.
Before the case itself he said: 'if I spoke the truth then Spain would be stripped of the World Cup and Euros'. All the blood bags that were seized during the investigation Fuentes said he could identify, or they could run tests to see who they belonged to. The Spanish courts made the decision to destroy all the blood bags without finding out who they belonged to, basically protecting their national success.
Spain is a massive hotbed for doping, as cycling has proved. The Whereabouts rule is a shower of shit by WADA and clearly doesn't work.