Two of Maria Sharapova's top sponsors have suspended ties with the Russian tennis star after she admitted failing a doping test. Sportswear giant Nike suspended its sponsorship, saying in a statement that it was "saddened and surprised by the news." Swiss watch brand TAG Heuer says its deal with the Russian will not be renewed. TAG Heuer said in a statement that its previous contract with Sharapova had expired at the end of 2015 and it has pulled out of negotiations on a new agreement. Ms. Sharapova, a five-time major winner, on Monday said she failed a test at the Australian Open in January for the banned substance meldonium, a heart medication commonly sold in Eastern Europe. Meldonium was added to the banned list on Jan. 1.
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