When it comes to sports generally, natural ability is what is expected of a sportsman as the use of performance, which automatically makes enhancing drugs is purely prohibited.
In 2011, Manchester City defender Kolo Toure was handed a £740, 000 fine, an equivalent of six times his weekly wages by the club following his failed drug test. Toure was banned for six months after he tested positive for a prohibited substance.
2) JAAP STAM
In 2002, Jaap Stam, former Manchester United defender, was banned for five months after failing a drug test.He was found guilty of taking the banned steroid, nandrolone. Alongside the ban, he was also fined 50,000 Euros (£31,000).
3) PEP GUARDIOLA
In 2001, Pep Guardiola, tested positive for the steroid nandrolone. Although he served the ban, he did campaign against it before he was finally exonerated in 2007.
4) EDGAR DAVIDS
Edgar Davids, back in 2001, tested positive for steroid Nandrolone, he was later banned for the his drug use.
In August of 2013, he tested positive for traces of furosemide – a diuretic that can be used to mask traces of other substances . He however kept playing until four days prior to his retirement. The ban was officially implemented after he retired.
6) ADRAIN MUTU
Adrian Mutu, failed a drug test after just 27 games for Chelsea.It was revealed that he had taken cocaine. He received a seven-month ban from football and an ongoing legal battle. While playing for Fiorentina, he also failed a second drug test, this time for doping and given a nine month ban before later been sacked by the club.
7) MAMADOU SAKHO
Liverpool defender, was first given a 30-days by Uefa for failing a drugs test.He however did not face any more ban after reports emerged that the fat burner found in Sakho’s sample was ‘not on the list of unauthorized products.
8) DIEGO MARADONA
The most high-profile footballer to have failed a drug test. He was reportedly on banned substance ephedrine where he was given a lengthy ban for this.