(Edit commentary) : Regarding the discussion of years at #1 of these all time Greats... This is a fair observation that there are variant views on the topic. In 1978, though the computer put Navratilova at #1, the formulas used for calculating tournament & h2h value was still quite primitive, and by modern computer equations, Evert surely would have been #1. Indeed, in consideration of the times, in the pre-1980 years, Tennis Historians & Media still elected who was #1 - as expert observational insight was still valued - & Chris did earn that distinction. She did so by matching Navratilova's slam count (both played 2, winning 1 each - though only Evert made the finals of both) and beating Navratilova at the Colgate Series final (The WTA's sponsor, as Virginia Slims Championships had been before & after) - which was considered a 5th major at the time... and thereby holding a 3-2 edge over Martina in the h2h, as well as an enviable 56-3 record. Both Martina's wins over Chris were 7-5 & 9-7 in the 3rd set. This is a factor that matters to rankings today but was not considered then. So it's amorphous territory, and not as cut & dry as it would be deemed today. Many serious tennis historians consider Evert to have been ranked #1 a full Seven Years, and those who don't are generally open to the discussion. There are arguments for fewer than 7. But just as remarkable, Evert was never outside the Top 2 for 13 straight years. This will not likely be matched. Nor should it be ignored that the person she was #2 to was a fellow all-time great in her prime years, (ie, before Navratilova was 30 years old) which says a lot for how many years of comparable #1 were in her.