![Swiss tennis star Martina Hingis attends a coaching event during the China Open 2016 tennis tournament in Beijing, China, 2 October 2016.(Imaginechina via AP Images Stock Photo - Alamy Swiss tennis star Martina Hingis attends a coaching event during the China Open 2016 tennis tournament in Beijing, China, 2 October 2016.(Imaginechina via AP Images Stock Photo - Alamy](https://c8.alamy.com/comp/2P0W2D2/swiss-tennis-star-martina-hingis-attends-a-coaching-event-during-the-china-open-2016-tennis-tournament-in-beijing-china-2-october-2016imaginechina-via-ap-images-2P0W2D2.jpg)
Swiss tennis star Martina Hingis attends a coaching event during the China Open 2016 tennis tournament in Beijing, China, 2 October 2016.(Imaginechina via AP Images Stock Photo - Alamy
![Swiss Tennis Tennisclub Unterägeri Lucerne Organization, PNG, 1110x819px, Tennis, Area, Brand, Communication, Diagram Download Free Swiss Tennis Tennisclub Unterägeri Lucerne Organization, PNG, 1110x819px, Tennis, Area, Brand, Communication, Diagram Download Free](https://img.favpng.com/7/22/20/swiss-tennis-tennisclub-unter-geri-lucerne-organization-png-favpng-aCb0HGZU4AuDbWSSavcfzvTMy.jpg)
Swiss Tennis Tennisclub Unterägeri Lucerne Organization, PNG, 1110x819px, Tennis, Area, Brand, Communication, Diagram Download Free
![Retired Swiss tennis star Martina Hingis smiles during a press conference in Pattaya, southern Thailand, Sunday, Jan. 30, 2005. Hingis considers a comeback in Volvo tennis womens match in Pattaya. Hingis was Retired Swiss tennis star Martina Hingis smiles during a press conference in Pattaya, southern Thailand, Sunday, Jan. 30, 2005. Hingis considers a comeback in Volvo tennis womens match in Pattaya. Hingis was](https://c8.alamy.com/comp/2PEE9JC/once-retired-swiss-tennis-star-martina-hingis-returns-the-ball-to-marlene-weingartner-from-germany-during-the-first-round-of-the-volvo-womens-open-tennis-tournament-in-pattaya-thailand-on-tuesday-feb-1-2005-former-worlds-no-1-hingis-was-22-when-she-retired-in-2002-after-operations-on-both-ankles-ap-photokiti-singsakul-2PEE9JC.jpg)