9 December 1995
South African heavyweight boxer, Francois (Frans) Botha, nickamed the "White Buffalo," secured a victory in a split decision against Germany's Axel Schulz to win the International Boxing FederationWorld Heavyweight Championship. Previous to the fight, the representatives of the two boxers, the president of  IBF/USBA and the representative of the German Boxing Federation, had signed a document entitled "Rules for IBF/USBA & Intercontinental Championship Bouts" ("Bout Rules"), which included an anti doping rule. Subsequent to Botha's victory, his urine specimen was sent to a German laboratory where it tested positive for anabolic steroids. He and his camp claimed that he took medicine prescribed by a doctor for an arm injury.
References

Francois Botha. Wikipedia [Online]. Available at: https://en.wikipedia.org/ [accessed 22 September 2011]|

vls.law.vill,'Bout Rules',[Online],Available at:www.vls.law.vill.edu,[Accessed:26 November 2013]