Question: What sport did Jack Sock and Raffaella Reggi play?

full_context: Document 1: Andy Roddick: Andrew Stephen Roddick (born August 30, 1982) is an American former professional tennis player from the US.
Document 2: Bettina Fulco: Bettina Fulco (born 23 October 1968) is a retired Argentine professional women's tennis player. She reached her highest ranking of No. 23 on October 10, 1988. Fulco began playing tennis at age 10 at the University Club in her hometown of Mar Del Plata, having been inspired to start because of the increased interest in the sport in Argentina due to Guillermo Vilas' success. As a junior, Bettina was among the best in the world, reaching the finals of the Orange Bowl 18-and-under championships in 1986, and finishing second in the rankings in 1986. She turned professional in 1987. Like many South American players, Bettina Fulco was considered a clay court specialist, and reached the quarterfinals of the French Open in 1988. Bettina beat Martina Navratilova in Houston 1994 for her biggest career victory. She also achieved victories over Conchita Martínez, Arantxa Sánchez Vicario, Hana Mandlíková, Katerina Maleeva, Manuela Maleeva, Magdalena Maleeva, Claudia Kohde-Kilsch, Lori McNeil and Nathalie Tauziat. She retired from professional tennis in 1998.
Document 3: Mara Santangelo: Mara Santangelo (born 28 June 1981) is a former professional tennis player from Italy. She retired from the sport on 28 January 2011.
Document 4: 1987 US Open – Mixed Doubles: Raffaella Reggi and Sergio Casal were the defending champions but lost in the semifinals to Martina Navratilova and Emilio Sánchez.
Document 5: Vasek Pospisil: Vasek Pospisil (, ] ; born June 23, 1990) is a Canadian professional tennis player. He is the No. 3 male ranked player in Canada, after Milos Raonic and Denis Shapovalov. Pospisil has a career-high World singles ranking of 25, and No. 4 in doubles. As Canada's currently ranked No. 3 in singles and No. 3 in doubles, he is an important member of the Canada Davis Cup team. Along with partner Jack Sock, he won the 2014 Wimbledon Championships and the 2015 Indian Wells Masters men's doubles titles. He also reached the quarterfinals in singles at the 2015 Wimbledon Championships.
Document 6: Raffaella Reggi: Raffaella Reggi (born 27 November 1965; ] ) is a former professional tennis player from Italy.
Document 7: Nick Kyrgios: Nicholas Hilmy Kyrgios ( ; born 27 April 1995) is an Australian professional tennis player who is currently ranked world No. 20 in men's singles by the Association of Tennis Professionals (ATP). He won the boys' singles event at the 2013 Australian Open and the boys' doubles event at the 2013 Wimbledon Championships. Kyrgios' biggest achievements are reaching the quarterfinals of the 2014 Wimbledon Championships—defeating ATP number 1 Rafael Nadal and Richard Gasquet en route—and the quarterfinals of the 2015 Australian Open. Kyrgios is the second player after fellow Aussie Lleyton Hewitt to beat Roger Federer, Rafael Nadal and Novak Djokovic in their first meeting. He has been controversial at times, for example admitting in 2017 that he had "probably" tanked at eight tournaments during his professional career, because on certain days he’d "rather be doing something else than play tennis".
Document 8: Roberta Vinci: Roberta Vinci (] ; born 18 February 1983) is an Italian tennis player. Up until 6 April 2015, she held the position of World No. 1 in doubles, while reaching a career-high of World No. 7 in singles in May 2016. She is the fourth Italian woman to have reached the top 10 in singles, together with Flavia Pennetta, Francesca Schiavone and Sara Errani. At 33 years and 4 days old, she is also the oldest ever player to make her first appearance in the Top 10.
Document 9: John Isner: John Robert Isner (born April 26, 1985) is an American professional tennis player who is currently ranked world No. 17 in men's singles by the Association of Tennis Professionals (ATP). Considered one of the best servers of the ATP World Tour, Isner achieved his career-high singles ranking of world No. 9 in April 2012. In 2013, he became the 18th player to serve more than 5,000 aces on the ATP World Tour. He currently has 4th-most aces in the history of ATP, having served more than 8,800 aces. At the 2010 Wimbledon Championships, he played the longest professional tennis match in history, defeating Nicolas Mahut in a total of 11 hours and 5 minutes of play over the course of three days. He also played the then 10th-longest singles match, a 5-hour 41-minute encounter in the second round of the 2012 French Open.
Document 10: 1988 Virginia Slims of San Diego – Singles: Raffaella Reggi was the defending champion but did not compete that year.
Document 11: Jack Sock: Jack Sock (born September 24, 1992) is an American professional tennis player who is currently ranked world No. 21 in men's singles by the Association of Tennis Professionals (ATP). He is one of the top ranked American men in both singles and doubles on the ATP Tour. A former junior US Open champion, Sock's singles success is highlighted by 7 ATP finals, including three titles. His career best result came at the 2017 Indian Wells Masters, where he reached the semi-finals.
Document 12: Jim Courier: James Spencer Courier Jr. (born August 17, 1970) is an American former World No. 1 professional tennis player. During his career, he won four Grand Slam singles titles, two at the French Open and two at the Australian Open. He holds the record for being the youngest man to have reached the finals of all four Grand Slam singles tournaments, at the age of 22 years and 11 months. He also won five Masters 1000 series titles. Until Novak Djokovic in 2016, Courier was the last man to win both the Australian and French Opens in the same calendar year.
Document 13: Adriano Panatta: Adriano Panatta (born 9 July 1950) is a former professional tennis player from Italy. He is best remembered for winning the French Open in 1976, and for being the only player to ever defeat Björn Borg at Roland Garros, which he did on two occasions.
Document 14: Janko Tipsarević: Janko Tipsarević (, ] ; born 22 June 1984) is a Serbian professional tennis player. His career-high singles ranking is world No. 8, achieved on 2 April 2012. In his career, he has won four ATP World Tour titles, one ATP doubles title, three Futures, and 15 Challenger titles. Tipsarević also won the 2001 Australian Open Junior title. Tipsarević has achieved two victories over a World No. 1 player, having defeated compatriot Novak Djokovic twice. He also has thirteen victories against other players in the top 10: four wins against Tomáš Berdych, and one each against Fernando González, Mikhail Youzhny, David Ferrer, James Blake, Gaël Monfils, Andy Murray and Juan Mónaco. He holds victories over former World No. 1 players Carlos Moyá, Marat Safin, Lleyton Hewitt, Juan Carlos Ferrero and Andy Roddick. His best results at a Grand Slam have been reaching the quarterfinals at the US Open in 2011 and 2012. He is only the second Serb to reach the final 16 at all four different grand slams.
Document 15: Melanie Oudin: Melanie Oudin (born September 23, 1991) is a former American tennis player and former world junior No. 2. She was a member of the American Fed Cup team from 2009 to 2011 and winner of the 2011 US Open mixed doubles title, with fellow American player Jack Sock.
ground_truth: tennis