5. Maria Sharapova.
Maria Sharapova has been playing tennis since she was only four years of age and won a competition at 13 that was intended for 16-year-olds. The profoundly gifted and achieved tennis player beat Serena Williams in 2004, which was a significant surprise.
In 2016, she was suspended from the game for testing positive for a restricted substance that helped her perseverance. She chose to resign soon after the 15-month suspension.
