Question: Who is older, Sandy Mayer or Stefan Edberg?

full_context: Document 1: Jared Palmer: Jared Eiseley Palmer (born July 2, 1971) is a professional tennis player who won 28 professional doubles titles and one singles title in his career on the ATP Tour. He also won four double titles on the challenger's circuit (two in 1992 and two in 1993). Palmer turned professional in 1991 after winning the 1991 NCAA Division 1 singles title as a sophomore playing for Stanford University.
Document 2: Paul Annacone: Paul Annacone (born March 20, 1963) is an American former touring professional tennis player and current tennis coach. He is the former coach of open-era leader in Grand Slams Roger Federer and former World No. 1 Pete Sampras. Annacone is currently a coach at ProTennisCoach.com and a commentator at Tennis Channel
Document 3: Gene Mayer: Gene Mayer (born April 11, 1956) is a former tennis player from the United States who won 14 singles titles during his career.
Document 4: 1992 US Open – Men's Singles: Stefan Edberg was the defending champion and retained his title, defeating Pete Sampras 3–6, 6–4, 7–6, 6–2 in the final to win the men's singles title at the 1992 US Open. The semifinal between Edberg and Michael Chang was a battle wherein Edberg won in five sets after 5 hours and 26 minutes, then the longest match in the Open Era. This is also where John McEnroe and Jimmy Connors played their last Grand Slams.
Document 5: Goran Ivanišević: 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.
Document 6: Sandy Mayer: Alexander "Sandy" Mayer (born April 5, 1952) is a former tennis player from the United States, who won ten titles in singles and twenty-four titles in doubles during his professional career. He was part of the winning tennis squad at Stanford University in 1973.
Document 7: 1981 Stockholm Open: The 1981 Stockholm Open was a men's tennis tournament played on hard courts and part of the 1981 Volvo Grand Prix and took place in Stockholm, Sweden. The tournament was held from 2 November through 8 November 1981. Third seeded Gene Mayer won the singles title after a victory in the final against his brother Sandy.
Document 8: Sandra Reynolds: Sandra Reynolds Price ("née" Reynolds; born 4 March 1934) is a former tennis player from South Africa who won four Grand Slam women's doubles championships and one Grand Slam mixed doubles championship. Her best Grand Slam singles result was reaching the 1960 Wimbledon final, losing to Maria Bueno 8–6, 6–0. Reynolds is the only female player from South Africa to have reached the Wimbledon singles final, and she is one of three to have reached a singles final in a Grand Slam. In 1961, she was seeded no. 1 for the Wimbledon Ladies Singles Championship, making her the only South African player (man or woman) ever to be seeded first in a Grand Slam singles event. She was the runner-up at the 1959 , losing to Sally Moore in the final. Price won the German Championships in 1960, 1961, and 1962. She was the runner-up at the 1959 Italian Championships, having defeated Bueno in a semifinal, then losing to Christine Truman in the final.
Document 9: Guadalajara Open: The Guadalajara Open is a defunct tennis tournament that was played on the Grand Prix tennis circuit in 1978. The event was held in Guadalajara, Mexico and was played on outdoor clay courts. Gene Mayer won the singles title while Sandy Mayer and Sherwood Stewart partnered to win the doubles title.
Document 10: Stefan Edberg: Stefan Bengt Edberg (] ; born 19 January 1966) is a Swedish former world no. 1 professional tennis player (in both singles and doubles). A major proponent of the serve-and-volley style of tennis, he won six Grand Slam singles titles and three Grand Slam men's doubles titles between 1985 and 1996. He also won the Masters Grand Prix and was a part of the Swedish Davis Cup-winning-team four times. In addition he won four Masters Series titles, four Championship Series titles and the unofficial Olympic tournament 1984, was ranked in the singles top 10 for ten successive years, 9 years in the top 5, and is considered one of the greatest players of his era. Edberg began coaching Roger Federer in January 2014, with this partnership ending in December 2015.
Document 11: Edberg–Lendl rivalry: The tennis players Stefan Edberg (Sweden) and Ivan Lendl (Czechoslovakia, 1978–92/United States, 1992–94) met 27 times during their careers. Edberg leads the series 14–13. In an interview with the ATP in 2008 Edberg reflected on his classic rivalries.
Document 12: Mats Wilander: Mats Wilander (] ; born 22 August 1964) is a former World No. 1 tennis player from Sweden. From 1982 to 1988, he won seven Grand Slam singles titles (three at the French Open, three at the Australian Open, and one at the US Open), and one Grand Slam men's doubles title (at Wimbledon).
Document 13: Vitas Gerulaitis: Vytautas Kevin Gerulaitis (July 26, 1954 – September 17, 1994) was an American professional tennis player. In 1975, Gerulaitis won the men's doubles title at Wimbledon, partnering with Sandy Mayer. He won the men's singles title at one of the two Australian Open tournaments held in 1977 (Gerulaitis won the tournament that was held in December, while Roscoe Tanner won the earlier January tournament). Gerulaitis also won two Italian Open titles, in 1977 and 1979, and the WCT Finals in Dallas, in 1978.
Document 14: Becker–Edberg rivalry: The tennis players Boris Becker (Germany) and Stefan Edberg (Sweden) met 35 times between 1984 and 1996. Although Becker led their overall head-to-head series 25–10 and won all three of their Davis Cup matches, Edberg won three of their four meetings in Grand Slams. Edberg and Becker also reached the world Tour Finals in 1989 which Edberg won in Four sets.
Document 15: 2010 Roger Federer tennis season: Roger Federer won the Australian Open, beating Briton Andy Murray, whom he also beat in the final of the 2008 US Open. Federer played in eighteen tournaments in 2010, and won five. He made the semifinals of his opening tournament at the Qatar Open in Doha, losing to Nikolay Davydenko, and at the Estoril Open, which he had won in 2008, losing to defending and eventual champion Albert Montañés. Federer was runner-up in the Mutua Madrileña Madrid Open to Rafael Nadal. At the French Open, he faced his opponent in the previous year's final, Robin Söderling at the quarterfinals stage and lost. As defending champion at Wimbledon, he was defeated in the quarterfinals by Tomáš Berdych in four sets, thus ending his streak of seven consecutive Wimbledon finals also falling to world no. 3, his lowest ranking since 2003. During the summer hard-court season, Federer hired Paul Annacone to be his coach and revive his form. At the 2010 US Open, Federer advanced to his seventh straight semifinal appearance, but lost to Novak Djokovic in five sets, despite holding two match points in the final set. Federer's ranking slipped from no. 2 to no. 3 after the tournament, but he finished the year strong with victories in Stockholm, Basel, and the ATP Tour Finals to pass Djokovic in the rankings and finish the year at no. 2.
ground_truth: Alexander "Sandy" Mayer