Why in the world did Tennis Magazine mix the women and men in a single ratings/rankings list? If the ranking is based on dominance on the court and who might be able to defeat whom if they were playing against each other in their prime, their list is ludicrous. Top women pros in their prime can't play top men pros in their prime, so the rankings or ratings of men and women have to be separate.
The TENNIS list is not to be taken too serously because of this. In fact, much of the rankings is based on something like which players may have had the greatest impact on the game in the last 40 years, not the same as who had the greatest skills on the court or who could outplay whom in their primes.
As far as who might have had the "greatest impact" on their sport in the last 40 years, that would have to be Billie Jean King. Her key role in starting the women's tour and then her defeat of Riggs (far further from his prime than Billie Jean was from hers at the time, as I would think Billie Jean would have to admit herself), would have to make her the player with the greatest impact on tennis in the last 40 years.
The TENNIS list is not to be taken too serously because of this. In fact, much of the rankings is based on something like which players may have had the greatest impact on the game in the last 40 years, not the same as who had the greatest skills on the court or who could outplay whom in their primes.
As far as who might have had the "greatest impact" on their sport in the last 40 years, that would have to be Billie Jean King. Her key role in starting the women's tour and then her defeat of Riggs (far further from his prime than Billie Jean was from hers at the time, as I would think Billie Jean would have to admit herself), would have to make her the player with the greatest impact on tennis in the last 40 years.