Originally Posted by Chrissie-fan
I'm sure they like each other or at least get along. Otherwise they wouldn't play so often against each other in these things. And Maria is very popular while Caroline probably also ranks in the top five of most popular (though not at TF obviously) or well known players, so it's a good match-up from a business perspective.
For Maria, it's either Caroline or Petra Kvitova. I can't think of any others.