Jamie Murray has announced his retirement from tennis at the age of 40 years old. Murray retires from the sport having accumulated 34 doubles titles and more than £5.2million in prize money. While his younger brother Sir Andy Murray was more well known in the sport, Murray retires with seven Grand Slam doubles titles in his trophy cabinet. He also became the first ever British doubles player to become the World No. 1 when he shot to the top of the rankings in 2017. Two of his doubles titles