Question: Are Svetlana Kuznetsova and Alex O'Brien both retired?

Context paragraphs:
2013 Australian Open – Women's Doubles: Russian pair Svetlana Kuznetsova and Vera Zvonareva were the defending champions, but Zvonareva decided not to participate due to injury.  Kuznetsova partnered up with Yanina Wickmayer but they lost in the second round to Nuria Llagostera Vives and Zheng Jie.

2003 Dubai Duty Free Women's Open – Doubles: Barbara Rittner and María Vento-Kabchi were the defending champions, but Rittner did not compete this year.  Vento-Kabchi teamed up with Angelique Widjaja and lost in semifinals to tournament winners Svetlana Kuznetsova and Martina Navratilova.

Alex O'Brien: Alex O'Brien (born March 7, 1970 in Amarillo, Texas) is a retired professional tennis player from the United States, who competed on the ATP Tour.  He became the world No. 1 doubles player in May 2000 and was ranked as high as world No. 30 in singles in June 1997.

Svetlana Kuznetsova: Svetlana Aleksandrovna Kuznetsova (Russian: Светла́на Алекса́ндровна Кузнецо́ва ; ] ; born 27 June 1985) is a Russian tennis player.  Kuznetsova has appeared in four Grand Slam singles finals, winning two, and has also appeared in seven doubles finals, winning twice.  As a doubles player, Kuznetsova has reached the finals of each Grand Slam at least once, winning the Australian Open twice.  She is currently the No. 8 ranked player on the WTA rankings.

2016 Kremlin Cup – Women's Singles: Svetlana Kuznetsova was the defending champion and successfully defended her title, defeating Daria Gavrilova in the final, 6–2, 6–1.  By claiming the title, Kuznetsova became the final qualifier for the 2016 WTA Finals.

2010 Sony Ericsson Open – Women's Doubles: Svetlana Kuznetsova and Amélie Mauresmo were the defending champions, but Mauresmo retired from the sport on December 3, 2009.

2005 Uncle Tobys Hardcourts – Doubles: Svetlana Kuznetsova and Elena Likhovtseva were the defending champions, but Kuznetsova did not compete this year.  Likhovtseva teamed up with Magdalena Maleeva and successfully defended her title, by defeating Maria Elena Camerin and Silvia Farina Elia 6–3, 5–7, 6–1 in the final.

Nikolay Kuznetsov (cyclist): Nikolay Aleksandrovich Kuznetsov (Russian: Николай Александрович Кузнецов ; born 20 July 1973) is a retired Russian professional track bicycle racer.  He won a silver medal at the 1996 Summer Olympics.  His sister is tennis player Svetlana Kuznetsova.

2010 Billie Jean King Cup: The 2010 Billie Jean King Cup was the 2nd edition of this tennis exhibition tournament.  Seven-time Grand Slam champion Venus Williams, 2009 French Open Champion Svetlana Kuznetsova, and 2009 US Open Champion Kim Clijsters participated.  2009 Australian Open and Wimbledon Champion Serena Williams had to withdraw from the event due to a leg injury.  She was replaced by 2008 French Open Champion Ana Ivanovic.  In the first semifinal, Clijsters defeated Ivanovic in a tiebreaker (7–2), despite Ivanovic having match point at 5–4 up.  Williams defeated Kuznetsova in the second semifinal, 6–4.  Williams defeated Clijsters in the championship match by a score of 6–4 3–6 7–5.

Rossana de los Ríos: Rossana de los Ríos (born 16 September 1975) is a retired professional tennis player from Paraguay.  She was born in the Paraguayan capital, Asunción, and now lives in Miami, USA, with her daughter Ana Paula Neffa de los Ríos and her husband Gustavo Neffa, a retired Paraguayan Association football player who played for Boca Juniors.  Rossana achieved a career high singles ranking of No. 51 on 12 September 2001, and No. 52 in doubles on the Sony Ericsson WTA Tour.  De los Ríos played doubles with Grand Slam champions such as Maria Sharapova, Svetlana Kuznetsova, Arantxa Sánchez Vicario, as well as Jelena Janković and Dinara Safina.  Rossana is also a former world number one Junior player, having won the 1992 Roland Garros Juniors event.  De los Ríos participated in six editions (1994, 2001, 2002, 2003, 2009 and 2010) of the Australian Open.  She was the only female tennis representative for Paraguay in the 1992 and 2000 Olympic Games.

Supporting paragraphs: Svetlana Kuznetsova Alex O'Brien
Answer: no