I wonder how these and other rankings posted by tennis pros and others are impacted by anything other than pure, objective playing records? From that point of view only, my money is on Jimmy Connors (certainly NOT #8).
Records held by Jimmy Connors:
Most ATP singles titles won: 109.
Most WCT singles titles won: 48.
Most singles matches won on ATP WCT Grand Prix tours: 1,242.
Most singles matches played in a career: 1,519
Most ATP singles finals in a career: 158.
Most carpet court titles in a career: 44.
Most grass court titles won in a year (1974): 4.
Most hard court titles won in a year (1973): 9 (shared with Roger Federer).
Most indoor court titles in a career: 54.
Most consecutive years with a match winning percentage over 80% (1973–84): 12.
Most career Majors match wins: 232 (shared with Roger Federer).
Most career Majors match wins on grass: 107
Most Majors semifinals: 31.
Most Majors quarterfinals: 41
Most consecutive semifinals at an individual Grand Slam tournament: 12 at US Open.
Most match wins at a single grand slam tournament US Open: 98.
Most match wins at a single grand slam tournament Wimbledon: 84.
Most career match wins overall on grass courts: 169.
Best match winning percentage at the Australian Open 91.7% (11–1).
Best Majors win–loss record in a single year (1974) 100% (20–0) (shared with Rod Laver).
Most Grand Prix championship series tiles won in a year (1976): 5 (shared with Rod Laver).
Most years finishing in the top ten: 16 (shared with Andre Agassi).
Most US Open men's singles titles: 5 (shared with Pete Sampras and Roger Federer).
Most years ended in the top 3: 12
Most consecutive years ended in the Top 3 (1973-84):12.
Most years ended in the top 5: 14
Most years ended in the top 10: 16 (shared with Andre Agassi).
Most consecutive years ended in the top 10 (1973-88):16
Most consecutive weeks ranked inside the top 10: 788.
Most consecutive years winning at least 5 tour titles per year(1972-1980): 9
Won at least one Major title on at least three different surfaces (shared with Mats Wilander, Andre Agassi, Roger Federer and Rafael Nadal). Connors is also the only man to win U.S. Open singles championships on grass, clay, and hard courts.
Completed the shortest match at any single Grand Slam tournament final US Open (1974) by defeating Ken Rosewall in only 20 games 6–1, 6–0, 6–1.
More...In 1974, Connors was by far the most dominant player. He had a 99-4 record that year and won 15 tournaments, including all the Grand Slam singles titles except the French Open. The French Open did not allow Connors to participate due to his association with World Team Tennis.
His exclusion from the French Open most likely prevented him from becoming the first male player since Rod Laver to win all four Grand Slam singles titles in a calendar year. Despite not being allowed to play in the French Open in his prime, he was still able to reach the semifinals four times in his later years.
Also, In 1975, Connors won two highly-touted "Challenge Matches", televised nationally by CBS Sports from Caesars Palace in Las Vegas. The first match, in February and billed as $100,000 ($408,065 today) winner-takes-all, was against Laver. Connors won that match, 6–4, 6–2, 3–6, 7–5. Connors won all three meetings with Rod Laver in tour events. ( I know Laver was "past his prime" so no need to tell me that). You can watch the match on YouTube.
Another slant at
http://online.wsj.com/article/SB10001424052748703933404576170562828252014.html