Question: Jo Durie and Kimberly Po, are both former what?

full_context: Document 1: 2007 Wimbledon Championships – Mixed Doubles: The mixed doubles event at the 2007 Wimbledon Championships was held over six rounds of competition. The final took place on July 8 with unseeded pair Jamie Murray and Jelena Janković defeating fifth-seeds Jonas Björkman and Alicia Molik in three sets. Jamie Murray became the first British Wimbledon champion since Jeremy Bates and Jo Durie won the same competition in the 1987 championships.
Document 2: Jamie Murray career statistics: Jamie Murray is a professional tennis player who is the current British number one doubles player. He has reached eight grand slam finals in total: (4 Doubles, 4 Mixed), he has won the mixed doubles at the 2007 Wimbledon Championships, 2017 Wimbledon Championships and 2017 US Open, and the men's doubles at the 2016 Australian Open and 2016 US Open, and has finished as runner-up in the men's doubles tournament at the 2015 Wimbledon Championships and 2015 US Open and in mixed doubles at the 2008 US Open. Murray has been ranked as high as World No. 1 in the ATP doubles rankings, and was the first Britain to be ranked as world number one since the introduction of computerised world rankings in the 1970s. He is currently ranked at world No. 5.
Document 3: Zina Garrison: Zina Lynna Garrison (born November 16, 1963) is a former professional tennis player from the United States. During her career, she was a women's singles runner-up at Wimbledon in 1990, a three-time Grand Slam mixed doubles champion, and a women's doubles gold medalist and singles bronze medalist at the 1988 Olympic Games. She is currently coaching Taylor Townsend.
Document 4: Kimberly Po: Kimberly Po-Messerli (born October 20, 1971) is a former professional tennis player from the United States.
Document 5: Jo Durie: Joanna Mary Durie (born 27 July 1960) is a former singles World No. 5 professional tennis player from the United Kingdom. During her career, she also reached No. 9 in the world in doubles, and won two Grand Slam titles, both in the mixed doubles with Jeremy Bates.
Document 6: 1992 Australian Open – Mixed Doubles: Jo Durie and Jeremy Bates were the defending champions but lost in the quarterfinals to Robin White and Scott Davis.
Document 7: Betty Stöve: Betty Stöve (born 24 June 1945) is a Dutch former professional tennis player. She is best remembered for reaching the ladies' singles final at Wimbledon in 1977. She also won ten Grand Slam titles in women's doubles and mixed doubles.
Document 8: JoAnne Russell: JoAnne Russell (born October 30, 1954) is an American former professional tennis player. With playing partner Helen Gourlay Cawley, she won the Wimbledon Ladies' Doubles title in 1977. They beat the team of Chris Evert and Rosie Casals in the first round and the top-ranked team of Martina Navratilova and Betty Stöve in the final (6–3, 6–3). Russell reached a career-high singles ranking of No. 22.
Document 9: Tracy Austin: Tracy Ann Austin Holt (born December 12, 1962) is an American former World No. 1 retired professional tennis player. She won three Grand Slam titles, including the women's singles titles at the 1979 and 1981 US Opens, and the mixed doubles title at the Wimbledon Championships in 1980. Additionally, she won the WTA Tour Championships in 1980 and the year-ending Toyota Championships in 1981, both in singles. A series of injuries and a serious automobile accident cut short her career. Since 1979, she has been the youngest US Open female singles champion in history, and she is the youngest inductee of all time at the International Tennis Hall of Fame. Austin won singles titles on all playing surfaces: clay (both red clay and green clay), indoor carpet, grass, and hard courts.
Document 10: 1988 Wimbledon Championships – Mixed Doubles: Jo Durie and Jeremy Bates were the defending champions but lost in the second round to Elna Reinach and Eddie Edwards.
Document 11: Mary Joe Fernández: Mary Joe Fernández Godsick (born María José Fernández; August 19, 1971) is an American former professional tennis player. She reached a career-high ranking of world No. 4 in both singles and doubles. Fernández was the runner-up in three Grand Slam singles tournaments and won two Grand Slam women's doubles titles and two Olympic gold medals.
Document 12: Pam Teeguarden: Pam Teeguarden (born April 17, 1951) is a former American professional tennis player in the 1970s and 1980s, ranked in the top 20 from 1970–1975, according to "John Dolan's Women's Tennis Ultimate Guide", prior to computer rankings. She won two Grand Slam Doubles Titles and was a quarter finalist in singles at the U.S. Open and The French Open. Her father Jerry, a well known coach, helped Margaret Court win the coveted Grand Slam (all four Grand Slam titles in one year) in 1970 and Virginia Wade to her 1977 Wimbledon triumph. Teeguarden was voted the "Most Watchable Player" based on play and appearance by a group of Madison Avenue advertising executives or "Mad Men" while playing at the US Open. Teeguarden played in 19 consecutive US Opens, holding the record until Chris Evert played in 20. She wore the first all black outfit in the history of tennis in 1975 at The Bridgestone Doubles Championships in Tokyo, starting a trend that is still popular today. Teeguarden was the first woman tennis player signed by Nike. She played on the victorious Los Angeles Strings Team Tennis team in 1981 and won the Team Tennis Mixed Doubles Division with Tom Gullikson in 1977; they were also runners-up in the league that year.
Document 13: Françoise Dürr: 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.
Document 14: Jennifer Capriati: Jennifer Maria Capriati (born March 29, 1976) is an American former professional tennis player. A member of the International Tennis Hall of Fame, she won three singles championships in Grand Slam tournaments and a gold medal at the 1992 Summer Olympics in Barcelona, reached the World No. 1 ranking, and is considered one of the greatest tennis players of all time.
Document 15: Kim Clijsters: Kim Antonie Lode Clijsters (] ; born 8 June 1983) is a Belgian former professional tennis player. Clijsters is a former world No. 1 in both singles and doubles.
ground_truth: professional tennis player