IranSportsPress (ISP): 4 athletes banned after using enhancing drugs 4 athletes banned after using enhancing drugs ================================================================================ Ali Azim-Araghi on 22/02/2011 08:51:00 MNA- Four Iranian athletes tested positive for banned substances. Boxer Masoud Rigi tested positive for the banned substance Nandrolone. Kabbadi player Sajad Maleki tested positive for Oxymetholone. Also, track and field athletes Amir Piahu and Amir Alvand failed in their doping tests due to traces of Stanozolol. These four Iranian sportsmen have been banned from competitions for two years.