Question: When was former professional tennis player, tennis coach, and the current commissioner of World TeamTennis, who won the 1976 US Open women's doubles title with Linky Boshoff?

Context articles: 1977 South African Open (tennis)
Jamie Murray career statistics
Kirsten Flipkens
Pam Teeguarden
Fiorella Bonicelli
Linky Boshoff
Bruno Soares
Williams sisters
Ilana Kloss
Murphy Jensen

The 1977 South African Open, also known by its sponsored name "SAB Open", was a combined men's and women's tennis tournament played on outdoor hard courts in Johannesburg, South Africa.
 The men's tournament was part of the 1977 Colgate-Palmolive Grand Prix while the women's event was part of the 1977–1978 Colgate International Series.
 It was the 74th edition of the tournament and was held from 28 November through 6 December 1977.
 Guillermo Vilas and Linky Boshoff won the singles titles.
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.
Kirsten "Flipper" Flipkens (] ; born 10 January 1986) is a Belgian tennis player.
 Her WTA career-high singles ranking is World No. 13, which she achieved in August 2013.
 She had success as a junior, winning the girls' doubles title at the 2002 US Open and the singles titles at the 2003 Wimbledon Championships and the 2003 US Open.
 Since then she has won 1 WTA singles title, 1 WTA doubles title, 12 ITF singles titles, and 1 ITF doubles title.
 Her best Grand Slam performance was at the 2013 Wimbledon Championships, where she reached the semifinal.
 In the same year, she was crowned Sportswoman of the Year at the Belgian Sport Awards.
 In 2016, Flipkens entered in her first Olympic Games in Rio de Janeiro and made it to the fourth round in both singles and doubles.
 She is also the Belgian player who has played the most years in Fed Cup (14 years as of 2017).
 For this reason, she received the Fed Cup Commitment Award in 2016.
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.
Fiorella Bonicelli (born 21 December 1951) is a retired professional tennis player from Uruguay.
 During her career, she won the 1975 French Open mixed doubles title with Thomaz Koch.
 She also won the 1976 French Open women's doubles title with Gail Lovera, defeating Kathleen Harter and Helga Niessen Masthoff 6–4, 1–6, 6–3.
 At the Fed Cup, her singles record is 11–4, and doubles record 6–8.
 During her career, she reached one Grand Slam singles quarterfinal, at the 1978 French Open, where she lost to Virginia Ruzici 6–7, 6–4, 6–8.
Delina Ann Boshoff-Mortlock, commonly known as Linky Boshoff, (born 12 November 1956), is a former professional tennis player who won the 1976 US Open women's doubles title with her partner Ilana Kloss.
Bruno Fraga Soares (] ; born February 27, 1982, in Belo Horizonte) is a professional tennis player from Brazil.
 His highest singles ranking on the ATP Tour is World No. 221, which he reached in March 2004.
 Primarily a doubles specialist, his career-high doubles ranking is World No. 2, which he achieved in October 2016.
 After a few efforts, including a final in the 2012 US Open and the semifinals of the 2008 and 2013 French Opens, Soares finally won his first Grand Slam title at the 2016 Australian Open, partnering Jamie Murray and then followed that up with a second men's doubles title at the 2016 US Open.
 He has also won three Grand Slam titles in Mixed Doubles, two at the US Open, in 2012 and 2014, and one at the Australian Open in 2016.
 He was the third Brazilian tennis player to achieve this, after Maria Bueno and Thomaz Koch.
The Williams sisters are two professional American tennis players: Venus Williams (b. 1980), a seven-time Grand Slam title winner (singles), and Serena Williams (b. 1981), twenty-three-time Grand Slam title winner (singles), both of whom were coached from an early age by their parents Richard Williams and Oracene Price.
 There is a noted professional rivalry between them – between the 2001 US Open and the 2017 Australian Open tournaments, they met in nine Grand Slam singles finals.
 They became the first two players, female or male, to play in 4 consecutive grand slam singles finals from the 2002 French Open to the 2003 Australian Open; Serena famously won all 4 to complete the first of two "Serena Slams".
 Between 2000 and 2016, a 17-year span, they collectively won 12 Wimbledon singles titles (Venus won 5 and Serena won 7).
 By winning the 2001 Australian Open women's doubles title, they became the 5th pair to complete the Career Doubles Grand Slam and the only pair to complete the Career Doubles Golden Slam.
 At the time, Venus and Serena were only 20 and 19 years old, respectively.
 Since then they have gone on to add another two Olympic gold medals in the 2008 Beijing Olympics and the 2012 London Olympics.
 Nearly a decade later, the duo would go on to win 4 consecutive grand slam doubles titles from 2009 Wimbledon through 2010 Roland Garros, which would catapult them to co-No.
 1 doubles players on 7 June 2010.
 Two weeks later, on 21 June 2010, Serena would hold the No. 1 singles ranking and Venus would be right behind her at No. 2 in singles.
 Their most recent grand slam doubles titles came at the 2012 Wimbledon & 2016 Wimbledon events.
 They remain very close, often watching each other's matches in support, even after one of them has been knocked out of a tournament.
Ilana Sheryl Kloss (born 22 March 1956) is a former professional tennis player, tennis coach, and the current commissioner of World TeamTennis, a position that she has held since 2001.
Murphy Jensen (born October 30, 1968) is an American former professional tennis player from Ludington, Michigan, and currently the coach of the Washington Kastles of World TeamTennis.
 His elder brother is former professional tennis player Luke Jensen.
 Jensen has a son William (born 1999) with actress Robin Givens, whom he dated periodically during the late 1990s.