Denis Olegovich Istomin (born 7 September 1986) is an Uzbek pro...
wikipedia - 31 May 2021Denis Olegovich Istomin (born 7 September 1986) is an Uzbek professional tennis player born in Russia. He has won two singles titles (at the 2015 Aegon Open Nottingham and 2017 Chengdu Open)[4][5] and achieved a career-high singles ranking of world No. 33 in August 2012. In January 2017, he defeated defending champion Novak Djokovic in the second round of the Australian Open.[6]