Bob Bryan

The younger of the two Bryan twins, left-handed Bob Bryan has one of the best serves in the Doubles game. Along with his brother Mike, the duo have won 16 Men's Doubles Grand Slam titles. However, in Mixed Doubles, it is Bob who has tasted more success.
Bob has won 7 Mixed Doubles titles (all except the Australian Open) with 6 different partners - Victoria Azarenka, Liezel Huber, Samantha Stosur, Katarina Srebotnik, Vera Zvonareva and Martina Navratilova. At the 2006 US Open, a 50-year-old Martina Navratilova won her last Grand Slam title along with Bob Bryan in Mixed Doubles.
Martina Hingis

Teenage sensation Martina Hingis took the tennis world by storm in the mid-1990s setting numerous youngest-ever records. She won a Grand Slam Doubles title at Wimbledon aged just 15 and the following year became the French Open Singles champion at the age of just 16.
However, it was only in her second spell on the WTA Tour after coming out of retirement that she started playing in the Mixed Doubles format. In the second and third stints of her career, she focussed mainly on Mixed Doubles and Doubles. She won 7 Mixed Doubles titles including 4 with Leander Paes, 2 with Jamie Murray and 1 with Mahesh Bhupathi.