Liezel Huber (née Horn; born 21 August 1976, Durban, South Africa) is a professional tennis player from the United States, having been a naturalized American citizen since July 2007. Huber has won four Grand Slam titles in women's doubles with partner Cara Black, one with Lisa Raymond, and two mixed doubles titles with Bob Bryan. On 12 November 2007, she became the co-World No. 1 in doubles with Cara Black. On 19 April 2010, Huber became the sole No. 1 for the first time in her career.