Were Menno Oosting and Liezel Huber both professional tennis players?
Liezel Huber Liezel Huber (née Horn; born 21 August 1976) is a South African-American retired tennis player who represents the United States internationally. 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.
Raven Klaasen Raven Klaasen (born 16 October 1982) is a professional South African tennis player. Klaasen's career-high singles ranking is world number 208, which he achieved on 24 October 2011. He has had more success playing doubles, with the notable achievement of reaching the 2014 Australian Open finals with partner Eric Butorac. Their run to the final included a victory over the World No. 1 team of Bob and Mike Bryan. As of July 2016, he is ranked at a career-high doubles ranking of 9.