IBF middleweight champion Daniel Geale could face a new opponent for the mandatory defence of his title after a positive drug test was returned by Aussie challenger Sam Soliman.
Soliman beat former champion Felix Sturm in Germany on February 1, but his A sample taken after the fight has reportedly tested positive to a "designer drug with stimulating effects".
German Boxing president Thomas Puetz released an official statement describing the substance as an amphetamine that helps produce a higher amount of oxygen and can be dangerous to a human being when misused.
Sturm was holidaying in Dubai when told of the news, taking to Twitter to post, "Incredible, this explains a lot".
Soliman's camp was shocked when news of the positive test broke, manager David Stanley saying he had insisted that testing be done prior to and after the fight.
If Soliman's B sample also tested positive the fight would be ruled a no contest and Sturm would become the mandatory challenger for Geale's belt.
While Stanley described the test result as "rubbish", Puetz said he would inform Germany's National Anti-Doping Agency and the IBF of the positive outcome.
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