Denis Zivkovic (born September 30, 1987) is an American professional tennis player and competes mainly on the ATP Challenger Tour and ITF Futures, both in singles and doubles.
Denis was sponsored by several prominent tennis and sports brands.
Zivkovic reached his highest ATP singles ranking No. 292 achieved on 18 March 2013 and his highest ATP doubles ranking No. 161 achieved on 5 August 2013.
He was born in United States of Serbian descent, but his family moved to Miami when he was seven.