Martina Hingis

Martina Hingis is a 25-time Grand Slam tennis champion. Today, the mother of a five-year-old daughter coaches young tennis talents, is an active ambassador and rides horses. She was ranked world number one in singles and doubles on the WTA Tour for a total of 209 weeks. She won the silver medal in women's doubles at the 2016 Summer Olympics, 43 WTA singles titles and 64 WTA doubles titles. After the 2017 WTA Finals, she retired as world number one.