Björn Borg was the three-time defending champion.
 He successfully defended his title, defeating Ivan Lendl 6–1, 4–6, 6–2, 3–6, 6–1 in the final to win the Men's Singles tennis title at the 1981 French Open.
Björn Borg defeated defending champion Guillermo Vilas 6–1, 6–1, 6–3 in the final to win the Men's Singles tennis title at the 1978 French Open.
 Borg did not lose a single set in the event.
 The tournament also featured the first grand slam appearance of Ivan Lendl.
Boris Becker was the defending champion and defeated Ivan Lendl 6–4, 6–3, 7–5 in the final to win the Gentlemen's Singles tennis title at the 1986 Wimbledon Championships, his second consecutive.
Ivan Lendl was the defending champion and retained his title, defeating Miloslav Mečíř 6–4, 6–2, 6–0 in the final to win the Men's Singles tennis title at the 1986 US Open.
Lisa Raymond (born August 10, 1973) is an American retired professional tennis player who has achieved notable success in doubles tennis.
 Raymond has 11 Grand Slam titles to her name: 6 in women's doubles and 5 in mixed doubles.
 On June 12, 2000, she reached the world number one ranking in doubles.
 Her career high singles ranking was fifteenth in October 1997.
Ivan Lendl (] ; born March 7, 1960) is a retired tennis player originally from Czechoslovakia who became a United States citizen in 1992.
 He is often considered among the greatest in the sport's history.
 He was the world No. 1 for 270 weeks in the 1980s and finished his career with 94 singles titles.
 At the majors he won eight titles and was runner-up a record 11 times.
 He also won seven year-end championships and a record 22 Grand Prix Super Series titles.
Yannick Noah was the defending champion, but lost to Mats Wilander in the quarterfinals.
 Ivan Lendl beat John McEnroe in a close five set match 3–6, 2–6, 6–4, 7–5, 7–5 in the final to win the Men's Singles tennis title at the 1984 French Open.
The Connors–Lendl rivalry was a tennis rivalry played between American Jimmy Connors and Czech-American Ivan Lendl, who met 35 times.
 Connors, who is 7 and a half years older than Lendl, won the first 8 matches, while Lendl won the last 17 and ended up leading the rivalry 22–13.
Jimmy Connors was the defending champion and retained his title, defeating Ivan Lendl 6–3, 6–7, 7–5, 6–0 in the final to win the Men's Singles tennis title at the 1983 US Open.
Ivan Lendl was the two time defending champion and retained his title again, defeating Mats Wilander 6–7, 6–0, 7–6, 6–4 in the final to win the Men's Singles tennis title at the 1987 US Open.
 It was also the 6th consecutive US Open final of Lendl's record 8 consecutive US Open finals.

Question: Did Ivan Lendl or Lisa Raymond reach a high rank in singles tennis?
Answer: Ivan Lendl