In the 12 years from the introduction of the WTA rankings in November 1975 until August 1987, one of the two held the top spot in all but 23 weeks.
2 (and generally the top two players for the entire ten-year period), only three times did any other player beat them both back-to-back in the same tournament: Evonne Goolagong Cawley at the 1978 Virginia Slims of Boston, Tracy Austin at the 1979 US Open, and Hana Mandlíková at the 1985 US Open.
[8] From the 1981 Australian Open to the 1985 Wimbledon Championships, the duo won a record 15 consecutive major singles titles.
From the 1981 Wimbledon Championships to the 1988 Australian Open, they won 22 of 27 major singles titles, and at least one of them appeared in each of those 27 finals.
[11] In their 45th match, Evert and Navratilova played a three-set epic at the final of the 1981 Australian Open.
In his book, tennis historian Steve Flink ranks it as one of their two most significant matches, alongside the 1985 French Open final.
In a rematch of the previous year's final, Evert beat Navratilova in three sets at the 1982 Australian Open.
[20] It is one of the two matches that tennis historian Steve Flink considers the most significant in their rivalry, alongside the 1981 Australian Open final.
[21] WTA, Fed Cup, and Grand Slam main draw results included.
Evert 37 – Navratilova 43 For all players in their era see: Tennis performance timeline comparison (women)