It was revealed earlier this week that Liverpool's Mamadou Sakho could face a lengthy ban after he was found guilty of using a banned substance, but he isn't the first star to have done so. Can you name any others?
There have been a number of different cases of doping to have hit the football fraternity, and while some were done illegally, others were also caught with a substance for the most arbitrary of reasons.
In fact, former AC Milan striker Marco Borriello was suspended from the game for a few months after testing positive for prednisolone and prednisone. It was later revealed that it came from a cream to treat an STD he caught from his girlfriend.
Former Chelsea star Adrian Mutu was kicked out of Stamford Bridge for his addiction to cocaine, while, in 2011, he was banned from the Romanian national team after being caught drinking.
Click on the gallery to see some footballers who were caught using illegal substances.
Which case surprises you the most?
