Who had the highest singles ranking Tomáš Šmíd or Ross Case?
Ross Case Ross Case (born 1 November 1951) is an Australian former tennis player. His career-high singles ranking was world no. 14.
Denis Gremelmayr Denis Gremelmayr (born 16 August 1981) is an inactive German male tennis player. His career-high singles ranking is World No. 59, achieved in May 2008.