Are John Austin and Daniela Hantuchová both retired tennis players ?
yes
Daniela Hantuchová
Daniela Hantuchová (] ; born 23 April 1983) is a retired tennis player from Slovakia.
 She turned professional in 1999 and had her breakthrough year in 2002, when she won her first WTA tournament, the Indian Wells Masters, defeating Martina Hingis in the final and becoming the lowest-ranked player to ever win the tournament.
 She also reached the quarterfinals of that year's Wimbledon Championship and US Open, ending the year in the top 10.
 She was part of the Slovak team that won the 2002 Fed Cup and the 2005 Hopman Cup.
John Austin (tennis)
John Austin (born July 31, 1957) is an American former professional tennis player born in Long Beach, California.
 He won the Wimbledon mixed doubles championship with his sister, Tracy Austin, in 1980, becoming the first brother and sister team to win a Grand Slam title together.
Nigel Sears
Nigel Sears (born 4 April 1957) is a British tennis coach, best known for coaching former top five players Amanda Coetzer, Daniela Hantuchová and Ana Ivanovic during his long career.
 He is currently the coach of Ekaterina Makarova. Maria Fernanda Alves
Maria Fernanda Barbato Alves (born 17 April 1983), also known as Nanda Alves, is a Brazilian tennis player.
 She is currently coached by her father Carlos and former tennis player Thomaz Koch.
 As of 1 March 2010, Alves is ranked World No. 262, and is the highest ranked Brazilian player.
 She has enjoyed success at the ITF Circuit, winning 18 singles and 26 doubles titles so far.
 Alves made her WTA Tour debut at Copa Colsanitas in 2004, and has played qualifications for all four Grand Slam events.
 Partnering with Vanessa Henke, Alves took part in the 2005 Australian Open doubles event, but they lost to Daniela Hantuchová and Martina Navratilova in the first round. 2011 PTT Pattaya Open – Singles
Vera Zvonareva was the two-time defending champion, but lost to Daniela Hantuchová in the semifinals.
 <br>Daniela Hantuchová won the title, defeating Sara Errani 6-0, 6-2 in the final. 2012 PTT Pattaya Open
The 2012 PTT Pattaya Open was a women's professional tennis tournament played on outdoor hard courts.
 It was the 21st edition of the PTT Pattaya Open and was part of the International category on the 2012 WTA Tour.
 It took place at the Dusit Thani Hotel in Pattaya City, Thailand from February 5 through February 12, 2012.
 Daniela Hantuchová won the singles title. 2009 Toray Pan Pacific Open – Doubles
Vania King and Nadia Petrova were the defending champions, both of them were present this year, but played with different partners.King partnered with Zheng Jie and Petrova partnered with Gisela Dulko both lost to Daniela Hantuchová and Ai Sugiyama, in the first round and the semifinals respectively.
Alisa Kleybanova and Francesca Schiavone won in the final 6-4, 6-2 against Daniela Hantuchová and Ai Sugiyama. Regina Kulikova
Regina Aleksandrovna Kulikova (Russian: Регина Александровна Куликова, born 30 January 1989) is a former professional Russian tennis player.
 Her highest WTA singles ranking is 65th, which she reached on May 3, 2010.
 Her career high in doubles is 417th, which she reached on 28 September 2009.
 Her best result on the WTA tour so far is the quarterfinal appearance at the 2010 Dubai Tennis Championships where she defeated Svetlana Kuznetsova.
 Her biggest victory at a Grand Slam tournament came at the 2011 Australian Open, where she defeated former semi-finalist Daniela Hantuchová in the first round. 2013 Kremlin Cup – Women's Doubles
Ekaterina Makarova and Elena Vesnina were the defending champions, but Makarova withdrew due to injury.
 Vesnina partnered up with Daniela Hantuchová, but they retired in the quarterfinals due to Hantuchová's injury.
<br> 2002 Wimbledon Championships – Mixed Doubles
Leoš Friedl and Daniela Hantuchová were the defending champions, but chose to play in different teams for this year.
 Friedl teamed up with Tina Križan and lost in first round, while Hantuchová partnered with Kevin Ullyett and reached to the final, losing in three sets.