1. Usain Bolt - Not busted or tied to drugs.
2.(tie) Tyson Gay - Busted.
2.(tie) Yohan Blake - Busted.
4. Asafa Powell - Busted.
5. Justin Gatlin - Busted.
6. Nesta Carter - Busted.
7. Tim Montgomery - Busted.
8.(tie) Ben Johnson - Busted.
8.(tie) Maurice Greene - Busted.*
10. Steve Mullings - Busted.
*Busted for buying PEDs, but claimed they were for a friend rather than himself.
So, Usain Bolt is the only person with a top-10 all time mark (including rescinded marks) that we can't say to have been involved with PEDs with 100% certainty. Gatlin runs a 9.74 (#5 sprinter all time) at 33 years old, when he was only capable of 9.77 at 24 years old while on drugs, and we're supposed to believe that he's suddenly clean? I love watching 100 meter races, but this is a joke.