Who won more double titles, Billy Martin or Helena Suková?
Helena Suková: Helena Suková (] ) (born 23 February 1965) is a former professional tennis player from the Czech Republic. Helena Suková:  During her career, she won 14 Grand Slam doubles titles, 9 of them in women's doubles and 5 of them in mixed doubles. Billy Martin (tennis):  During his career he won 1 singles titles and 3 doubles titles.
Helena Suková