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Soares has won three Grand Slam titles in mixed doubles. He won the 2012 and 2014 Australian Open with Jarmila Gajdošová and the 2016 US Open with Elena Vesnina. Soares is a successful doubles player, having won a total of 35 ATP Tour titles, including 10 Masters 1000 titles. He has also reached the finals of the ATP Finals three times.