Three-time World 1,500m champion Asbel Kiprop denies using banned substances – accuses officials of contaminating urine. Olympic 1500m champion, Kiprop has denied taking any performance enhancing drugs and he maintains his innocence and raises some serious issues in the statement that he has released. News of the failed test was first reported on Wednesday by … Continue reading Three-time World 1500m champion Asbel Kiprop denies using banned substances