Question: Who won more double titles, Billy Martin or Helena Suková?

Context paragraphs:
Billy Martin (tennis): Billy Martin (born December 25, 1956, in Evanston, Illinois, United States), is a right-handed former professional tennis player from the United States.  During his career he won 1 singles titles and 3 doubles titles.  He achieved a career-high singles ranking of World No. 32 in 1975.  Martin currently serves as the head coach for the UCLA Bruins men's tennis team, a position he has held for the past 24 years since 1994.  Martin, who played at UCLA, has a 14 straight top 5 NCAA team finishes and a 9 consecutive 20-win seasons.  He was named ITA (Intercollegiate Tennis Association) division 1 National Coach of the Year and is a member of ITA Hall of Fame.

1997 Wimbledon Championships – Women's Doubles: Martina Hingis and Helena Suková were the defending champions, but had different outcomes.  Hingis teamed up with Arantxa Sánchez Vicario and lost in quarterfinals to Nicole Arendt and Manon Bollegraf, while Suková teamed up with Larisa Neiland and lost in semifinals against the same pair.

1996 Bank of the West Classic – Doubles: Lori McNeil and Helena Suková were the defending champions but did not compete that year.

1991 Wimbledon Championships – Women's Doubles: Jana Novotná and Helena Suková were the defending champions, but entered the tournament with different partners.  Suková joined Arantxa Sánchez Vicario and were eliminated in the quarterfinals.  Novotná teamed up with Gigi Fernández and reached the finals, but lost to Larisa Neiland and Natasha Zvereva.

Helena Suková: Helena Suková (] ) (born 23 February 1965) is a former professional tennis player from the Czech Republic.  During her career, she won 14 Grand Slam doubles titles, 9 of them in women's doubles and 5 of them in mixed doubles.  She also was a four-time Grand Slam singles runner-up and won 10 singles titles and 69 doubles titles.

1984 Australian Open – Women's Singles: Martina Navratilova was the defending champion, and entered this tournament with a record 70-match winning streak, and 6 consecutive Grand Slam titles.  However, she was upset in the semifinals by Helena Suková.  Despite this loss and failure to complete the elusive Calendar Year Grand Slam, her 74-match winning streak remains the longest in professional tennis history.

1994 Toray Pan Pacific Open – Doubles: Martina Navratilova and Helena Suková were the defending champions but they competed with different partners that year, Navratilova with Manon Bollegraf and Suková with Larisa Neiland.

1994 Evert Cup – Doubles: Rennae Stubbs and Helena Suková were the defending champions but they competed with different partners that year, Stubbs with Mary Joe Fernández and Suková with Manon Bollegraf.

1991 French Open – Women's Doubles: Jana Novotná and Helena Suková were the defending champions.  Novotná and Suková entered the tournament with different partners, meeting in the semifinals were Novotná and Gigi Fernández eliminated Suková and Arantxa Sánchez Vicario.  Novotná then repeated as doubles champion with Fernández after defeating Larisa Neiland and Natasha Zvereva in the final.

1997 European Indoors – Doubles: Martina Hingis and Helena Suková were the defending champions but they competed with different partners that year, Hingis with Arantxa Sánchez Vicario and Suková with Larisa Savchenko.

Supporting paragraphs: Helena Suková Billy Martin (tennis)
Answer: Helena Suková