Former British sprinter, Darren Campbell, hopes Justin Gatlin beats Usain Bolt at this month’s world championships.

Campbell believes that such an outcome will turn the spotlight on the sport’s governing body and force it to have to deal with drugs cheats.

Gatlin, who has served two drugs bans in his career, has ran the four fastest times of the year over 100-metres.

Bolt dipped below 10 seconds for the first time this year at last week’s anniversary games in London.