Question: Are professional tennis players Sun Tiantian and Martin Damm from the same country?

Context articles: Virginia Slims Circuit
Martin Damm
1968 Wimbledon Championships – Men's Singles
Athletic DNA
Sun Tiantian
1993 US Open – Men's Doubles
Donald Dell
Men's International Professional Tennis Council
Patricia Tarabini
Challenge of Champions

The Virginia Slims Circuit was a tennis tour consisting of a group of originally nine female professional players.
 Formed in 1970, the Virginia Slims Circuit eventually became the basis for the later named WTA Tour.
 The players, dubbed the "Original 9", rebelled against the United States Lawn Tennis Association (USLTA) due to the wide inequality between the amount of prize money paid to male tennis players and to female tennis players.
Martin Damm (born 1 August 1972) is a former a professional tennis player from the Czech Republic.
 He is best known as a doubles player (his highest ranking being No. 5 in the world in April 2007).
 His highest singles ranking was No. 42 in August 1997.
 Damm won a total of 40 titles in doubles, including one Grand Slam title.
 He reached 5 singles finals.
Rod Laver defeated Tony Roche 6–3, 6–4, 6–2 in the final to win the Gentlemen's Singles title at the 1968 Wimbledon Championships.
 It was Laver's third Wimbledon title, and his seventh grand slam overall.
 This was the first year when professional tennis players were allowed to compete at the Wimbledon Championships.
 Previously only amateur tennis players could compete.
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.
Sun Tiantian (; ; born 12 October 1981) is a Chinese former professional tennis player.
The Men's Doubles tournament at the 1993 US Open was held from August 30 to September 12, 1993, on the outdoor hard courts at the USTA National Tennis Center in New York City, United States.
 Ken Flach and Rick Leach won the title, defeating Karel Nováček and Martin Damm in the final.
Donald Dell (born June 17, 1938 in Savannah, Georgia, United States) is an attorney and was a professional tennis player, U.S. Davis Cup captain, and administrator.
 Dell was one of the first professional sports agents, having represented professional tennis players Arthur Ashe, Stan Smith, Jimmy Connors, and Ivan Lendl during pro tennis' golden age (1975 to 1985).
 He was also the founder of Professional Services (ProServ), one of the nation's first sports marketing firms established in 1970 with co-founder, Frank Craighill, a fellow law partner.
 His younger brother, Dick, worked for ProServ managing US Open champion Gabriela Sabatini, and played Number One Singles for the University of Michigan.
 He was Big Ten #1 Singles Champion in 1969.
The Men's International Professional Tennis Council (MIPTC), also called the Men's Tennis Council (MTC), was a governing body that administered the men's professional Grand Prix tennis circuit.
 It was founded in 1974 and was made up of representatives of the International Tennis Federation (ITF), the Association of Tennis Professionals (ATP) and, from 1976 onwards, tournament directors from around the world.
 Among its main responsibilities were the sanctioning and scheduling of the tournaments that comprise the Grand Prix circuit.
 Additionally it was responsible for creating a code of conduct for tennis players and its subsequent enforcement via the administration of fines and suspensions.
Patricia Tarabini (born 6 August 1968) is an Argentine former tennis player.
 Tarabini represented her country and won the bronze Olympic medal at the 2004 Athens games, with Paola Suárez, where they lost 7–9 in the third set to eventual gold medalists from China, Sun Tiantian and Li Ting.
 On May 9, 1988, Patricia reached her highest singles ranking; world number 29.
 Tarabini's highest doubles ranking was world number 12, which she achieved on August 17, 1998.
 Patricia turned pro in 1986, and won a total of 15 top-level doubles titles in her career.
 She is the 1996 French Open mixed doubles champion, which she won with Javier Frana.
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.