Stefanos Tsitsipas from Greece returns a ball to Guido Andreozzi from Argentina during their Millennium Estoril Open ATP 250 Singles final tennis match, in Estoril, near Lisbon, on May 1, 2019. (Photo by Carlos Palma/NurPhoto via Getty Images)
Stefanos Tsitsipas from Greece returns a ball to Guido Andreozzi from Argentina during their Millennium Estoril Open ATP 250 Singles final tennis match, in Estoril, near Lisbon, on May 1, 2019. (Photo by Carlos Palma/NurPhoto via Getty Images)