![Pablo Carreno Busta from Spain serves to Nicolas Jarry from Chile, during their Millennium Estoril Open ATP Singles tennis match, in Estoril, Portugal on May 4, 2018. (Photo by Carlos Palma/NurPhoto Stock Pablo Carreno Busta from Spain serves to Nicolas Jarry from Chile, during their Millennium Estoril Open ATP Singles tennis match, in Estoril, Portugal on May 4, 2018. (Photo by Carlos Palma/NurPhoto Stock](https://c8.alamy.com/comp/2KAXTCC/pablo-carreno-busta-from-spain-serves-to-nicolas-jarry-from-chile-during-their-millennium-estoril-open-atp-singles-tennis-match-in-estoril-portugal-on-may-4-2018-photo-by-carlos-palmanurphoto-2KAXTCC.jpg)
Pablo Carreno Busta from Spain serves to Nicolas Jarry from Chile, during their Millennium Estoril Open ATP Singles tennis match, in Estoril, Portugal on May 4, 2018. (Photo by Carlos Palma/NurPhoto Stock
![Stefanos Tsitsipas of Greece returns a ball to Kevin Anderson of South Africa during the Millennium Estoril Open ATP 250 tennis tournament, at the Clube de Tenis do Estoril in Estoril, Portugal Stefanos Tsitsipas of Greece returns a ball to Kevin Anderson of South Africa during the Millennium Estoril Open ATP 250 tennis tournament, at the Clube de Tenis do Estoril in Estoril, Portugal](https://c8.alamy.com/comp/2KAXRT1/stefanos-tsitsipas-of-greece-returns-a-ball-to-kevin-anderson-of-south-africa-during-the-millennium-estoril-open-atp-250-tennis-tournament-at-the-clube-de-tenis-do-estoril-in-estoril-portugal-on-may-3-2018-photo-by-pedro-fizanurphoto-2KAXRT1.jpg)
Stefanos Tsitsipas of Greece returns a ball to Kevin Anderson of South Africa during the Millennium Estoril Open ATP 250 tennis tournament, at the Clube de Tenis do Estoril in Estoril, Portugal
![Cascais, Portugal. 6th May, 2018. Portugal's Joao Sousa hits a return during the men's singles final match against Frances Tiafoe of the United States at the Estoril Tennis Open in Cascais, Portugal, Cascais, Portugal. 6th May, 2018. Portugal's Joao Sousa hits a return during the men's singles final match against Frances Tiafoe of the United States at the Estoril Tennis Open in Cascais, Portugal,](https://c8.alamy.com/comp/MK384X/cascais-portugal-6th-may-2018-portugals-joao-sousa-hits-a-return-during-the-mens-singles-final-match-against-frances-tiafoe-of-the-united-states-at-the-estoril-tennis-open-in-cascais-portugal-may-6-2018-sousa-won-2-0-to-claim-the-title-credit-zhang-liyunxinhuaalamy-live-news-MK384X.jpg)