I have written about PED's and how hard it is to detect them in previous threads. The drugs are ahead of the testing...the only way you can prove 100% an athlete is clean is through muscle biopsy...which i don't see any athlete or sports body agreeing to. Also, people know how to "cycle" off and on drugs. To truly show an athlete is clean, would require regular and much more thorough testing. It wouldn't shock me if Manny and many other "superstar" athletes are on something (including Floyd). But until the testing becomes much more stringent and up to date, we will never know. That being said, Pac's attitude towards blood testing makes him look particularly suspicious. Bottom line, PED's are a reality in sports...to think otherwise is just sticking your head in the sand.