Damir Keretic (born March 26, 1960 in Zagreb) is a former tennis player from Germany, who didn't win a single title during his professional career. The righthander reached his highest singles ATP-ranking on February 7, 1983, when he became the number 58 of the world. March 26 is the 85th day of the year in the Gregorian Calendar (86th in leap years). ... 1960 (MCMLX) was a leap year starting on Friday (the link is to a full 1960 calendar). ... Zagreb (pronounced: ) is the capital and largest city of Croatia. ... Tennis balls This article is about the sport, tennis. ... The Association of Tennis Professionals (ATP) was formed in 1972 to protect the interests of male professional Tennis players. ... February 7 is the 38th day of the year in the Gregorian Calendar. ... 1983 (MCMLXXXIII) was a common year starting on Saturday of the Gregorian calendar. ...