The Grand Slam Cup was a tennis tournament held annually at the Olympiahalle in Munich in Germany from 1990 through 1999.
 The event was organized by the International Tennis Federation (ITF), which invited the best-performing players in the year's Grand Slam events to compete in the Grand Slam Cup.
The Williams sisters are two professional American tennis players: Venus Williams (b. 1980), a seven-time Grand Slam title winner (singles), and Serena Williams (b. 1981), twenty-three-time Grand Slam title winner (singles), both of whom were coached from an early age by their parents Richard Williams and Oracene Price.
 There is a noted professional rivalry between them – between the 2001 US Open and the 2017 Australian Open tournaments, they met in nine Grand Slam singles finals.
 They became the first two players, female or male, to play in 4 consecutive grand slam singles finals from the 2002 French Open to the 2003 Australian Open; Serena famously won all 4 to complete the first of two "Serena Slams".
 Between 2000 and 2016, a 17-year span, they collectively won 12 Wimbledon singles titles (Venus won 5 and Serena won 7).
 By winning the 2001 Australian Open women's doubles title, they became the 5th pair to complete the Career Doubles Grand Slam and the only pair to complete the Career Doubles Golden Slam.
 At the time, Venus and Serena were only 20 and 19 years old, respectively.
 Since then they have gone on to add another two Olympic gold medals in the 2008 Beijing Olympics and the 2012 London Olympics.
 Nearly a decade later, the duo would go on to win 4 consecutive grand slam doubles titles from 2009 Wimbledon through 2010 Roland Garros, which would catapult them to co-No.
 1 doubles players on 7 June 2010.
 Two weeks later, on 21 June 2010, Serena would hold the No. 1 singles ranking and Venus would be right behind her at No. 2 in singles.
 Their most recent grand slam doubles titles came at the 2012 Wimbledon & 2016 Wimbledon events.
 They remain very close, often watching each other's matches in support, even after one of them has been knocked out of a tournament.
The Association of Tennis Professionals (ATP) Tour is the elite professional tennis circuit organised by the ATP.
 The 1999 ATP Tour calendar comprises the Grand Slam tournaments, supervised by the International Tennis Federation (ITF), the ATP Super 9, the ATP Championship Series, the ATP World Series, the ATP World Team Cup, the ATP Tour World Championships and the Grand Slam Cup (organised by the ITF).
 Also included in the 1999 calendar are the Davis Cup and the Hopman Cup, which do not distribute ranking points, and are both organised by the ITF.
The 1998 Compaq Grand Slam Cup was a tennis tournament played on indoor hard courts at the Olympiahalle in Munich in Germany.
 The event was organized by the International Tennis Federation (ITF), which invited the best-performing players in the year's Grand Slam events to compete in the Grand Slam Cup.
The Association of Tennis Professionals (ATP) Tour is the elite tour for professional tennis organized by the ATP.
 The ATP Tour includes the Grand Slam tournaments (organized by the International Tennis Federation (ITF)), the ATP Super 9, the ATP Championship Series, the ATP World Series, the ATP World Team Cup, the Davis Cup (organized by the ITF), the ATP Tour World Championships and the Grand Slam Cup (organized by the ITF).
Venus Ebony Starr Williams (born June 17, 1980) is an American professional tennis player who is currently ranked world No. 5 in the WTA singles rankings.
 She is generally regarded as one of the all-time greats of women's tennis and, along with younger sister Serena Williams, is credited with ushering in a new era of power and athleticism on the women's professional tennis tour.
4D Sports Tennis (also known as World Tour Tennis and Compaq Grand Slam Cup) is a 3D Tennis computer game with motion capture animation of the 4D Sports series.
 The game uses untextured 3D polygon graphics.
The 1991 IBM ATP Tour was the elite tour for professional men's tennis organized by the ATP Tour.
 The IBM ATP Tour included the Grand Slam tournaments (organized by the International Tennis Federation (ITF)), the ATP Championship Series, Single-Week, the ATP Championship Series, the ATP World Series and the ATP Tour World Championships.
 The World Team Cup, Davis Cup (organized by the ITF) and Grand Slam Cup (organized by the ITF) are included in this calendar but did not count towards the Tour.
Venus Williams won in the final 6–2, 3–6, 6–2 against Patty Schnyder.
The IBM Association of Tennis Professionals (ATP) Tour is the elite tour for professional tennis organized by the ATP tour.
 The IBM ATP Tour includes the Grand Slam tournaments (organized by the International Tennis Federation, ITF), the ATP Super 9, the ATP Championship Series, the ATP World Series, the ATP World Team Cup, the Davis Cup (organized by the ITF), the ATP Tour World Championships and the Grand Slam Cup (organized by the ITF).

Question: The winner of the 1998 Compaq Grand Slam Cup – Women's Singles was born in what year?
Answer: 1980