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Izak Van Der Merwe, a member of South Africa's Davis Cup team, picked up four titles in five finals to lead all men in doubles championships on the USTA Pro Circuit in 2010. The 26-year-old won in Lexington, Ky., in July, Sacramento, Calif., in October, as well as the last two events on the men's calendar in Knoxville, Tenn., and Champaign, Ill., in November.