 Now, I'm curious about mixed doubles because this is one of the unusual settings where you have men and women at the highest level of professional sport playing against each other. Do we have any data about the win percentages of women serving against men or men serving against women? And what does that tell us about the game? There's not a lot of mixed doubles played these days. And there's the further complication that the players who compete in mixed doubles are often not the very best players. They're very good doubles players, but the top players