During the ATP 500 Series tournament, he defeated three top 20 players including No. 7 Thiem, before losing to world No. 1 Rafael Nadal in a lopsided match. With this result, Tsitsipas moved into the top 50 and became the second Greek to reach an ATP final after Nicky Kalogeropoulos in 1973.[40] His performance also gained national attention in Greece, where tennis is not a widely popular sport.[41][4] The following week at the Estoril Open, he reached another semifinal.