World Anti-Doping Agency, WADA, says that they have recorded 99 positive tests for the recently banned drug at the centre of the case involving five times grand slam Tennis champion Maria Sharapova. WADA spokesman Ben Nichols did not name the athletes who tested positive for meldonium, but said they came from different sports and were reported by many national anti-doping organisations. Meldonium, which is manufactured for people with heart problems, was added to WADA's list of banned substances on January, 1st, 2016. Russian Sharapova stunned the sport world earlier this week when she said she tested positive at January's Australian Open for meldonium, a substance she admitted to taking since 2006.