Updated On: 19 February, 2018 03:13 PM IST | PyeongChang | AFP
Russian curler Alexander Krushelnitsky has been accused of doping at the Pyeongchang Winter Olympics. A source says the case involves meldonium.


Maria Sharapova
Russian curler Alexander Krushelnitsky has been accused of doping at the Pyeongchang Winter Olympics. A source says the case involves meldonium. AFP Sport takes a closer look at meldonium and why it is a banned substance: