(AFRICAN EXAMINER) - Nigerian track queen Tobi Amusan has been cleared of doping violations with the provisional suspension lifted. “A panel of the Disciplinary Tribunal, by majority decision, has today found that Tobi Amusan has not committed an Anti-Doping Rule Violation (ADRV) of three Whereabouts Failures within a 12-month period,” the Athletics Integrity Unit (AIU)