Mr Trollism, ur name says it all. i think you are either confused about ur facts or u r one of those who is immersed in streotyping in this matter. Can you mention one african athlete who switched nationality as you said and got caught in drug issue?? drug in athletics is most common in european and us sprinters and other athletes and it is not something that is associated with african athlets. please read and digest facts, before smearing dirt. All athletes go through a rigorous dopping test in all major competitions.