Question: What do Daniel Nestor and Jana Novotná have in common?

Context paragraphs:
1993 Wimbledon Championships – Women's Singles: Steffi Graf defeated Jana Novotná 7–6, 1–6, 6–4 in the final to win the Ladies' Singles title at the 1993 Wimbledon Championships.  It was Graf's third consecutive appearance in the women's final, and her fifth Wimbledon championship victory.  Novotná would appear in two more ladies' finals, eventually winning the title in 1998.

Jana Novotná: Jana Novotná (] ; born 2 October 1968) is a former professional tennis player from the Czech Republic.  She played a serve and volley game, an increasingly rare style of play among women during her career.  She won the women's singles title at Wimbledon in 1998 and was runner-up in three previous Grand Slam tournaments.  Novotná also won 12 Grand Slam women's doubles titles and four Grand Slam mixed doubles titles.  Novotná achieved a career-high singles ranking of world No. 2 in 1997, and achieved the No. 1 ranking in doubles.

Daniel Nestor: Daniel Mark Nestor {'1': ", '2': ", '3': ", '4': "} (Serbian Cyrillic: Данијел Несторовић; born September 4, 1972 as Danijel Nestorović) is a Canadian professional tennis player.  He is one of the foremost doubles players in tennis history due to his longevity and continued success at the top of the men's game.  s of 2016 , he is 11th for most men's ATP titles in Open Era history.  In January 2016, Nestor became the first doubles player in ATP history to win 1000 matches.

1999 French Open – Women's Doubles: Martina Hingis and Jana Novotná were the defending champions, but they did not compete together this year.  Novotná instead partnered with Natasha Zvereva as the first seed, whereas Hingis partnered with Anna Kournikova as the second seed.  Novotná and Zvereva retired in their quarterfinal match against Lindsay Davenport and Mary Pierce, but Hingis and Kournikova reached the final where they lost to American sisters Serena and Venus Williams, 6–3, 6–7, 8–6.  This was the first Grand Slam for the Williams sisters and would be their first step towards completing a Career Golden Slam in doubles.

1991 French Open – Women's Doubles: Jana Novotná and Helena Suková were the defending champions.  Novotná and Suková entered the tournament with different partners, meeting in the semifinals were Novotná and Gigi Fernández eliminated Suková and Arantxa Sánchez Vicario.  Novotná then repeated as doubles champion with Fernández after defeating Larisa Neiland and Natasha Zvereva in the final.

1997 Open Gaz de France – Doubles: Kristie Boogert and Jana Novotná were the defending champions but they competed with different partners that year, Boogert with Irina Spîrlea and Novotná with Martina Hingis.

1997 Family Circle Cup – Doubles: Jana Novotná and Arantxa Sánchez Vicario were the defending champions but only Novotná competed that year with Lindsay Davenport.

1999 US Open – Women's Doubles: The 1999 US Open – Women's Doubles was the women's doubles event of the hundred-and-ninth edition of the US Open, the fourth and last Grand Slam of the year, and the most prestigious tournament in the Americas.  Martina Hingis and Jana Novotná were the defending champions, but Hingis did not compete this year and Novotná teamed up with Natasha Zvereva.  Novotná and Zvereva were eliminated in the third round by Liezel Horn and Kimberly Po.

1991 Australian Open – Women's Singles: Steffi Graf was the defending champion and was lost to Jana Novotná in the quarterfinals.  Monica Seles won the title and defeated Novotná 5–7 6–3 6–1 in the final to win the Women's Singles title at the 1991 Australian Open, which was held from 14 through 27 January 1991.  She became the first woman in the Open Era to win the Australian Open after saving a match point (in the semifinals, versus Mary Joe Fernandez).

1999 Wimbledon Championships – Women's Doubles: The 1999 Wimbledon Championships – Women's Doubles was the women's doubles event of the hundred-and-thirteenth edition of Wimbledon, the third Grand Slam of the year, the most prestigious tournament on grass courts, and the oldest tennis tournament in the world.  Martina Hingis and Jana Novotná were the defending champions but only Novotná competed that year with Natasha Zvereva.  Novotná and Zvereva lost in the semifinals to Mariaan de Swardt and Elena Tatarkova.

Supporting paragraphs: Daniel Nestor Jana Novotná
Answer: professional tennis player