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Who's the best tennis player of all time? Ranking of top male tennis players produces some surprises

Date:
March 3, 2011
Source:
Northwestern University
Summary:
Fans may think of Jimmy Connors as an "old school" tennis player, but according to a new ranking system developed using network analysis, Connors is best player in the history of the game.

Fans may think of Jimmy Connors as an "old school" tennis player, but according to a new ranking system developed by a Northwestern University researcher, Connors is best player in the history of the game.

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The rankings are published in PLoS ONE, a journal published by the Public Library of Science.

Male tennis players who played in at least one Association of Tennis Professionals match between 1968 and 2010 were evaluated through network analysis, said Filippo Radicchi, author of the study.

Ranking tennis players is a novel way to show how complex network analysis can reveal interesting facts hidden in statistical data, said Radicchi, a physicist and postdoctoral fellow in the chemical and biological engineering department of Northwestern's McCormick School of Engineering and Applied Science.

Radicchi ran an algorithm, similar to the one used by Google to rank Web pages, on digital data from hundreds of thousands of matches. The data was pulled from the Association of Tennis Professionals website. He quantified the importance of players and ranked them by a "tennis prestige" score. This score is determined by a player's competitiveness, the quality of his performance and number of victories.

"In this particular ranking system, it's more important to win a single match against a very good player than many matches against not-so-good players," said Radicchi, who conducted the research in the lab of Luνs Amaral, professor of chemical and biological engineering at the McCormick School.

Here's how the top 30 rank:

1. Jimmy Connors 11. Boris Becker 21. Mats Wilander
2. Ivan Lendl 12. Arthur Ashe 22. Goran Ivanišević
3. John McEnroe 13. Brian Gottfried 23. Vitas Gerulaitis
4. Guillermo Vilas 14. Stan Smith 24. Rafael Nadal 
5. Andre Agassi 15. Manuel Orantes 25. Raul Ramirez
6. Stefan Edberg 16. Michael Chang 26. John Newcombe
7. Roger Federer 17. Roscoe Tanner 27. Ken Rosewall
8. Pete Sampras 18. Eddie Dibbs 28. Yevgeny Kafelnikov
9. Ilie Năstase 19. Harold Solomon 29. Andy Roddick
10. Bjφrn Borg 20. Tom Okker 30. Thomas Muster

"One of the reasons Jimmy Connors ranks on top is because he played for more than 20 years and had the opportunity to win a lot of matches against other very good players," Radicchi said.

He expects current greats Roger Federer and Rafael Nadal to eventually move up in the rankings if they face tough competition and continue to win matches. Radicchi, a lifelong tennis fan, plans to run this study again in 10 years to see how the rankings change.

"The rankings are a snapshot of who is at the top at this time," Radicchi said. "Players who have yet to retire are penalized with respect to those who have ended their careers. Prestige scores strongly correlate with the number of victories, and active players haven't played all the matches of their careers yet."

Researching and ranking sports stars gives a glimpse at the power of complex network analysis.

"The same application could be used to rank countries involved in the global trade of certain commodities," Radicchi said. "In general, this type of analysis can help scientists better explain and understand complicated global relationships."


Story Source:

The above story is based on materials provided by Northwestern University. The original article was written by Erin White. Note: Materials may be edited for content and length.


Cite This Page:

Northwestern University. "Who's the best tennis player of all time? Ranking of top male tennis players produces some surprises." ScienceDaily. ScienceDaily, 3 March 2011. <www.sciencedaily.com/releases/2011/03/110301091225.htm>.
Northwestern University. (2011, March 3). Who's the best tennis player of all time? Ranking of top male tennis players produces some surprises. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2011/03/110301091225.htm
Northwestern University. "Who's the best tennis player of all time? Ranking of top male tennis players produces some surprises." ScienceDaily. www.sciencedaily.com/releases/2011/03/110301091225.htm (accessed December 21, 2014).

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