Task: Explanation
Input (English): Tomáš Šmíd (born May 20, 1956 in Plzeň) is a former tennis player from Czechoslovakia, who won nine singles titles during his career. In doubles, he won fifty-four titles and was World No. 1 in doubles from December 17, 1984 to August 11, 1985. The right-hander reached his highest ATP singles ranking of World No. 11 in July 1984. Šmíd participated in 31 Davis Cup ties for Czechoslovakia from 1977–1989, posting a 20-10 record in doubles and a 22-15 record in singles. Question: Who had the highest singles ranking Tomáš Šmíd or Ross Case? Answer: Tomáš Šmíd
Output (English):  The righthander reached his highest ATP singles ranking of World No. 11 in July 1984.