Question: Who had a higher world ranking, Robert Seguso or Venus Williams?
Context: Ken Flach and Robert Seguso were the defending champions, but Seguso did not participate this year.  Flach partnered Paul Annacone, losing in the first round. Gábor Köves (born 7 January 1970 in Budapest) is a retired Hungarian Olympian tennis player.  Seoul gold medalists Ken Flach and Robert Seguso stopped him and partner László Markovits in the second round in the 1988 Summer Olympics. Kenneth Eliot Flach (born May 24, 1963) is a former professional tennis player from the United States.  A doubles specialist, he won 4 Grand Slam men's doubles titles (2 Wimbledon and 2 US Open), and 2 Grand Slam mixed doubles titles (1 Wimbledon and 1 French Open).  He also won the men's doubles Gold Medal at the 1988 Olympic Games in Seoul, partnering Robert Seguso.  Flach reached the World No. 1 doubles ranking in 1985. Nduka Odizor (born 9 August 1958) is a former tennis player from Nigeria, who represented his native country at the 1988 Summer Olympics in Seoul, where he was defeated in the first round by American lucky loser Robert Seguso.  The right-hander won one career title in singles (Taipei, 1983) and seven doubles titles.  He reached his highest ATP singles ranking of World No. 52 in June 1984. Milan Šrejber (] ) (born 30 December 1963) is a former tennis player from Czechoslovakia, who represented his native country at the 1988 Summer Olympics in Seoul.  There he reached the semi finals of the men's doubles competition, partnering Miloslav Mečíř.  The pair was defeated by America's eventual winners Ken Flach and Robert Seguso, but still won the bronze medal.  The right-hander won one career singles title (Rye Brook, 1988), and reached his highest ATP singles ranking of World No. 23 in October 1986. 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. Robert Arthur Seguso (born May 1, 1963) is a former professional tennis player from the United States.  A doubles specialist, he won four Grand Slam men's doubles titles (two Wimbledon, one French Open and one US Open).  He also won the men's doubles Gold Medal at the 1988 Olympic Games in Seoul, partnering Ken Flach.  Seguso reached the World No. 1 doubles ranking in 1985.  He won a total of 29 career doubles titles between 1984 and 1991. 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. Ken Flach and Robert Seguso were the defending champions but lost in the quarterfinals to Broderick Dyke and Wally Masur. Donald Wailan-Walalangi (born April 14, 1960) is a retired tennis player from Indonesia, who represented his native country at the 1988 Summer Olympics in Seoul, South Korea.  There he lost in the first round of the men's doubles competition to USA's eventual gold medalists Ken Flach and Robert Seguso, while partnering Suharyadi Suharyadi.
Answer: Robert Arthur Seguso