Question:  Did Françoise Dürr play tennis professionally before Marin Čilić started to play professionally?

Context articles: 1970 Wimbledon Championships – Women's Doubles
Goran Ivanišević
1968 Wimbledon Championships – Women's Doubles
Françoise Dürr
Marin Čilić
1971 Rothmans Canadian Open
1967 French Championships – Women's Singles
1971 Virginia Slims Clay Court Championships
Marin Čilić career statistics
Kim Warwick

The Women's Doubles tennis competition was one of the events of the 1970 Wimbledon Championships which was played on outdoor grass courts at the AELTC in Wimbledon, London and held from 22 June to 4 July.
 Second-seeded Rosie Casals and Billie Jean King won in the final 6–2, 6–3 against the fourth-seeded team of Françoise Dürr and Virginia Wade.
Goran Ivanišević (; born 13 September 1971) is a retired Croatian professional tennis player and current tennis coach.
 He is the only person to win the men's singles title at Wimbledon as a wildcard.
 He achieved this in 2001, having previously been runner-up at the championships in 1992, 1994 and 1998.
 Before the 2001 tournament, he was ranked 125th and after his victory he was 16th.
 His career-high singles ranking was World No. 2 (behind Pete Sampras) in 1994.
 He coached Marin Čilić from September 2013 to July 2016, leading Čilić to his biggest achievement to date, the 2014 US Open title.
Rosemary Casals and Billie Jean King successfully defended their title, defeating Françoise Dürr and Ann Jones in the final, 3–6, 6–4, 7–5 to win the Ladies' Doubles tennis title at the 1968 Wimbledon Championships.
Françoise Dürr (born 25 December 1942; sometimes referred to by English writers as Frankie Durr) is a retired French professional tennis player.
 She won 26 major singles titles and over 60 doubles titles.
Marin Čilić (; born 28 September 1988) is a Croatian professional tennis player.
 Over the course of his career, Čilić has won 17 ATP singles titles, including the 2014 US Open.
 His career-high singles ranking is world No. 5, achieved in September 2017.
 Čilić first came to international prominence by defeating then-World No. 2 Andy Murray in the fourth round of the 2009 US Open.
 He followed this by reaching the semifinals of the 2010 Australian Open.
 Among other achievements, Čilić was runner-up at the 2017 Wimbledon Championships, and was a semifinalist at the 2015 US Open as defending champion.
 Čilić is currently the youngest active male player to have won a slam.
 Čilić has reached at least the quarterfinal in all four grand slam tournaments.
 He has a very powerful serve and very powerful groundstrokes.
The 1971 Rothmans Canadian Open was a tennis tournament played on outdoor clay courts at the Toronto Lawn Tennis Club in Toronto in Canada that was part of the 1971 World Championship Tennis circuit.
 The tournament was held from August 9 through August 16, 1971.
 John Newcombe and Françoise Dürr won the singles titles.
Françoise Dürr defeated Lesley Turner 4–6, 6–3, 6–4 in the final to win the Women's Singles tennis title at the 1967 French Championships.
The Virginia Slims Clay Court Championships, also known as the Virginia Slims of Chicago, was a women's tennis tournament played on outdoor clay courts at the Lake Bluff Bath & Tennis Club in Chicago, Illinois in the United States that was part of the 1971 WT Pro Tour.
 It was the inaugural edition of the tournament and was held from August 19 through August 22, 1971.
 Third-seeded Françoise Dürr won the singles title and earned $4,100 first-prize money.
This is a list of the main career statistics of Croatian professional tennis player, Marin Čilić.
 To date, Čilić has won 16 ATP singles titles including one grand slam singles title at the 2014 US Open, one ATP Masters 1000 title at the 2016 Western & Southern Open and a record four titles at the PBZ Zagreb Indoors.
 Other highlights of Čilić's career thus far include a semi-final appearance at the 2010 Australian Open and three consecutive quarterfinals at the Wimbledon Championships from 2014 to 2016.
 Čilić achieved a career high singles ranking of World No. 6 on November 21st, 2016.
Kim Warwick (born 8 April 1952) is an Australian former professional male tennis player who competed on the ATP Tour from 1970–1987 reaching the final of the singles Australian Open in 1980.
 He defeated over 35 players ranked in the top 10 including Guillermo Vilas, Raul Ramerez, Vitas Gerulaitis, Jan Kodeš, Bob Lutz and Arthur Ashe.
 Warwick's career-high singles ranking was World No. 15, achieved in 1981.
 He won three singles titles and 26 doubles, including Australian Open 1978 (with Wojtek Fibak) and Australian Open 1980 and 1981, Roland Garros 1986 and also a runner-up in Australian Open 1985, all of them partnering fellow countryman Mark Edmondson.
 Partnering with Evonne Goolagong, he won the French Open 1972, defeating Françoise Dürr and Jean-Claude Barclay in the final 6–2, 6–4.
 Evonne and Kim were finalists in 1972 at Wimbledon against Rosie Casals and Ilie Năstase who won 6–4, 6–4.