Wikipedia - Damir Džumhur

Damir Džumhur (Bosnian pronunciation: [dǎːmir dʒûmxur] JOOM-hoor; born 20 May 1992) is a Bosnian professional tennis player. He is currently Bosnia and Herzegovina's No. 1 player. His career-best singles ranking of World No. 23 achieved on 2 July 2018, makes him the highest-ranked player ever competing for Bosnia and Herzegovina.

By winning the 2017 St. Petersburg Open singles tournament, Džumhur became the first player competing under the Bosnian flag to claim an ATP World Tour title. He added also a triumph at the 2017 Kremlin Cup and became the first player in tennis history to win both events played on Russian soil in the same season. Džumhur is also the first male player to represent Bosnia and Herzegovina in the main draw of any Grand Slam tournament.

He is a member of the Bosnia and Herzegovina Davis Cup team, and he competed at the 2016 Summer Olympics, being selected as the first male tennis player from his country to do so.

As a junior, he was ranked world No. 3 and he was a bronze medalist at the 2010 Youth Olympic Games.