The 'whereabouts' rule catches out pro tennis players too

It's not just pro cyclists like 'Chicken' Rasmussen who have trouble pin-pointing where they will be, apparently some pro tennis players are location-challenged as well...

Belgian duo appeal against doping bans

Malisse and compatriot Yanina Wickmayer, the US Open semi-finalist, were both suspended by the Flemish Doping Tribunal (VDT) for failing to comply with the "whereabouts" rule, which ensures that they are available for out-of competition testing.

Keisse cleared of probable pseudoephedrine-related charge

Put this one in the 'I told you I had a cold and took a symptom-reducing tablet' basket. (Cathine can be found as a by-product of pseudoephedrine breakdown.) 

Keisse Doping Charges Dismissed | Cyclingnews.com

The doping charges against track rider Iljo Keisse were dismissed Monday by the Belgian cycling federation. Keisse tested positive for cathine and HCT during the Six Days of Gent in November 2008 but it was ruled that there was insufficient scientific evidence that he knowingly used doping products.