Why? They ran away from the sport because they could not compete with Serena. If they tried singles again, it would be a cowardly move only because they probably think Serena is currently vulnerable.There is a God. Henin and Hingis next please.
They would be entering a field loaded with majors winners, so Serena or no Serena, they would run into a number of serious roadblocks.
Agreed...unless the field all suddenly forget how to play tennis and/or suffer injuries and/or retire.But at her age? I doubt it. Perhaps doubles. She won't be winning any slams in singles, that's for sure.