Elena Pampoulova (also Elena Wagner, Elena Pampulova-Bergomi, Bulgarian: Елена Пампулова , born 17 May 1972) is a retired professional tennis player from Bulgaria.
 She competed for Fed Cup of the International Tennis Federation (ITF).
 Elena's first tennis coach was her own mother, Bulgarian tennis player Lubka Radkova.
 Elena's father, Emilian Pampoulov, is also a tennis player.
Serena Jameka Williams (born September 26, 1981) is an American professional tennis player.
 The Women's Tennis Association (WTA) has ranked her world No. 1 in singles on eight occasions, from 2002 to 2017.
 She became the world No. 1 for the first time on July 8, 2002.
 On the sixth occasion, she held the ranking for 186 consecutive weeks, tying the record set by Steffi Graf for the most consecutive weeks as world No. 1 by a female tennis player.
 In total, she has been world No. 1 for 319 weeks, which ranks her third in the Open Era among female tennis players.
 Some commentators, players and sports writers regard her as the greatest female tennis player of all time.
Anna-Lena Grönefeld (born 4 June 1985) is a German tennis player.
 She turned professional in April 2003.
Menno Oosting (17 May 1964 – 22 February 1999) was a professional tennis player from the Netherlands, who won seven ATP Tour doubles titles out of 18 finals in his career.
Jean-Julien Rojer (] ; born 25 August 1981) is a Dutch professional tennis player from Curaçao.
 His highest ATP singles ranking is 218th, which he achieved on 15 August 2005.
 A doubles specialist, his career-high in doubles is World No. 3, which he reached in November 2015.
 His former doubles partners include Eric Butorac and Aisam-ul-Haq Qureshi.
 He currently plays with Horia Tecău of Romania, with whom he won the men's double titles in the 2015 Wimbledon and 2017 US Open championships.
 With Anna-Lena Grönefeld, he also won the mixed doubles' title at the 2014 French Open.
 He attended UCLA where he competed for the UCLA Bruins men's tennis team.
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.
Maria Yuryevna Kirilenko-Stepanova (Russian: Мари́я Ю́рьевна Кириле́нко ; ] ; born 25 January 1987) is a Russian tennis player.
 Kirilenko won the 2002 U.S. Open Girls' Singles and won her first WTA Tour title in 2005, defeating Anna-Lena Grönefeld in the China Open.
 She has reached three Grand Slam singles quarterfinals, at the 2010 Australian Open the 2012 Wimbledon Championships and the 2013 French Open.
 In doubles, she has reached two Grand Slam doubles finals, at the 2011 Australian Open and the 2012 French Open, won the 2012 WTA Tour Championships and was a bronze medalist at the 2012 London Olympics.
 In June 2013, Kirilenko reached her career high ranking of World No. 10.
David Goffin (] ) (born 7 December 1990) is a Belgian professional tennis player who is currently ranked world No. 12 in men's singles by the Association of Tennis Professionals (ATP).
 He was born in Rocourt, Liège, Belgium.
 His breakthrough came when he reached the fourth round of the 2012 French Open as a lucky loser, eventually losing to Roger Federer in four sets.
 Goffin has defeated several higher-ranked players such as John Isner, Stan Wawrinka, Novak Djokovic, Marin Čilić, Milos Raonic, Jo-Wilfried Tsonga, Dominic Thiem and Tomáš Berdych, the latter without losing a game.
 He is the Belgian number 1 male tennis player as of 2017.
 On February 20, 2017 Goffin became the first Belgian male tennis player to reach the ATP top 10.
Anna-Lena Friedsam (born 1 February 1994) is a German tennis player.
Kenneth Carlsen (born 17 April 1973) is a Danish former professional tennis player, who was active between 1992 and 2007.
 Carlsen played left-handed with a one-handed backhand.
 His greatest asset was his powerful serve, and his game was therefore best suited to fast surfaces (grass and hardcourt) .
 For most of his long career Carlsen was Denmark's best tennis player, and consistently among the few Danish players playing at the highest international level.
 He was awarded as best Danish "Tennis Player of the Year" seven times by the Danish Tennis Federation (first time in 1991, last time in 2005).
 Two times the award went to the Danish Davis Cup team, of which Kenneth Carlsen until 2003 was a central part (having a 29–13 record in singles).

Question: Which tennis player was born first out of Menno Oosting and Anna-Lena Grönefeld?
Answer: Menno Oosting