The natural progression from Socquetball (Soccer/Racquetball mash-up) is taking the game to the open tennis court where there is a presupposed opponent- or several-that returns the favor.
Seems the US Women’s Soccer Team used the concept as a way to eat up an afternoon unexpectedly opened up due to a cancelled soccer match. They squeezed what looks like the entire squad onto the court. Looks like fun to me. 🙂