5-time Grand Slam champion Maria Sharapova has retired from competitive tennis. The former World Number 1 wrote a blog explaining her decision to retire from the sport. Sharapova picked up her first Grand Slam in 2004 when she won the Wimbledon at the age of just 17. She won a total of 5 slams including 2 French Open titles. Controversy hit her career when she tested positive for a banned substance in 2016 and was suspended for 2 years. In her long career, Sharapova won a total of 36 WTA titles, Federation Cup and an Olympic silver medal.