Martin Emmrich is a retired professional tennis player and current professional pickleball player on the PPA tour who specialized in doubles & mixed. He participated primarily on the ATP World Tour. On 12 October 2009, he reached his highest ATP singles ranking of world No. 604 whilst his highest doubles ranking of No. 35 was achieved on 5 August 2013.

Michaëlla Krajicek is a Dutch tennis player. She has won three singles and five doubles titles on the WTA Tour, as well as one WTA 125 doubles title, and 14 titles in singles and 22 in doubles on the ITF Women's Circuit. On 11 February 2008, she reached her highest WTA singles ranking of world No. 30. On 23 March 2015, she peaked at No. 23 in the doubles rankings.