Bolt only non-drug offender in 30 fastest ever 100m sprints
Of the 30 fastest men's 100m sprint times ever, only nine have been run by an athlete not banned for drugs, all by Jamaica's Usain Bolt. He holds the record for the three fastest 100m sprints in history. American sprinter Tyson Gay, the joint-second fastest athlete ever, has served two doping bans and was stripped off his 2012 Olympics silver.