Brands are cutting ties with tennis star Maria Sharapova after she failed a drug test, with Nike, Porsche and TAG Heuer the first brands to take action. Five-time Grand Slam champion Maria Sharapova announced at a press conference on Monday that she had failed a drug test at the Australian Open in January. Nike was the first to suspend its relationship with the athlete. In a statement the company said it was "saddened and surprised by the news," but that it will "continue to monitor the situation."