Stefanos Tsitsipas (Greek: Στέφανος Τσιτσιπάς, pronounced [ˈstefanos t͡sit͡siˈpas]; born 12 August 1998) is a Greek professional tennis player. He has been ranked as high as world No. 3 by the ATP, which he first achieved on 9 August 2021, making him the highest-ranked Greek, tied with Maria Sakkari. Tsitsipas was the champion at the 2019 ATP Finals, becoming the youngest winner of the year-end championships in eighteen years.
https://en.wikipedia.org/wiki/Stefanos_Tsitsipas