World No 2 Iga Swiatek has been banned from tennis for one month after testing positive for a banned substance.
Swiatek, a five-time grand slam champion, tested for trimetazidine (TMZ), which enhances blood flow, in an out-of-competition sample ahead of the Cincinnati Open in August. But she was able to prove to anti-doping authorities that she was contaminated by a supplement to combat jet lag, ensuring minimal sanction.
