Question: Are professional tennis players Cyril Suk and Scott Lipsky both doubles specialists?

Context paragraphs:
Cyril Suk: Cyril Suk III (born 29 January 1967) is a former professional tennis player.  A doubles specialist, Suk won one Grand Slam men's doubles title and four Grand Slam mixed doubles titles during his career.

Casey Dellacqua career statistics: This is a list of the main career statistics of professional Australian tennis player, Casey Dellacqua.  To date, Dellacqua has won eight career doubles titles: one grand slam mixed doubles title with Scott Lipsky at the 2011 French Open and seven WTA doubles titles including one Premier Mandatory doubles title with Yaroslava Shvedova at the 2015 Mutua Madrid Open.  Other highlights of Dellacqua's career include reaching the doubles finals of all four grand slams; a quarterfinal finish in singles at the 2014 BNP Paribas Open and fourth round appearances at the 2008 Australian Open and 2014 Australian Open and US Open respectively.  Dellacqua achieved a career high singles ranking of World No. 26 on September 29, 2014 and later achieved a career high doubles ranking of World No. 3 on February 1, 2016.

Challenge of Champions: The "Challenge of Champions" was created to be one of the richest prize money tennis events in the world.  Created by Leo E. Fenn III in 1985 as an Invitation Only Tennis Tournament which would feature daily matches which were the equivalent to the Finals of the US Open or Wimbledon.  It was usually held before the Masters and invited only the top eight men's tennis players in the world according to their rankings on the ATP poll.  In 1985, creator & founder 24-year-old Leo E. Fenn III partnered with 28-year-old Mark Myden to form a company called Special Events Productions.  SEP produced the "Challenge of Champions" Tournament which became a major player in professional tennis.  These two entrepreneurs became the youngest producers in history of professional tennis.  Leo & Mark acquired major fortune 500 corporate sponsors such as AT&T, VISA, Cadillac, Fila Sportswear, DeBeers Diamonds as well as negotiated two days of live weekend television coverage on NBC.  Their title sponsorship package sold to AT&T was the largest single vent sponsorship package in professional tennis that year.  Leo negotiated with the brand new Thomas Mack Center Arena in Las Vegas to host the inaugural event.  The event rights were eventually sold to Pro Serve and concluded following the 1989 Challenge.

1991 French Open – Mixed Doubles: The Mixed Doubles tournament at the 1991 French Open was held from 27 May until 9 June 1991 on the outdoor clay courts at the Stade Roland Garros in Paris, France.  Helena Suková and Cyril Suk won the title, defeating Caroline Vis and Paul Haarhuis in the final.

Treat Huey: Treat Conrad Huey ( ) (born 28 August 1985) is a Filipino-American tennis player who represents the Philippines in international competitions.  He turned professional in 2008 and he started representing the Philippines in the Davis Cup and the Southeast Asian Games in 2009.  Huey specializes in doubles and has reached eighteen finals on the ATP World Tour.  He won titles at the 2012 Citi Open, 2013 Swiss Indoors, and 2014 Aegon International alongside Dominic Inglot, 2015 Estoril Open with Scott Lipsky, and 2015 St. Petersburg Open and 2015 Malaysian Open, Kuala Lumpur with Henri Kontinen.

Scott Lipsky: Scott Lipsky (born August 14, 1981, in Merrick, New York) is a professional tennis player from the United States.  He is primarily a doubles specialist.

Athletic DNA: Athletic DNA (ADNA) is an American sports apparel company.  Founded in Seattle in 2007, ADNA began by training young tennis athletes, which evolved into sponsoring Select Junior Tennis players, and then expanded to manufacturing clothing for youth and adult tennis players.  ADNA has since spread to professional tennis, and currently sponsors players on the ATP Tour & WTA Tour.

2017 Estoril Open – Doubles: Eric Butorac and Scott Lipsky were the defending champions, but Butorac retired from professional tennis in September 2016 and Lipsky chose to compete in Istanbul instead.

1993 Volvo International – Doubles: The 1993 Volvo International was a tennis tournament played on outdoor hard courts at the Cullman-Heyman Tennis Center in New Haven, Connecticut, United States and was part of the Championship Series of the 1993 ATP Tour.  The tournament ran from August 16 through August 23, 1993.  Kelly Jones and Rick Leach were the defending champions but only Jones competed that year with Paul Annacone.  Annacone and Jones lost in the semifinals to Cyril Suk and Daniel Vacek.  Suk and Vacek won in the final 7–5, 6–4 against Steve DeVries and David Macpherson.

2009 USTA LA Tennis Open – Doubles: Scott Lipsky and David Martin won the doubles' rivalisation in January 2009 and were the defending champions, however they chose to not participate.

Supporting paragraphs: Cyril Suk Scott Lipsky
Answer: yes