|Miss three and: SEE YA!|
Divide players into two teams. They play singles against each other, one player at a time, one ball at a time. So for example, with Team A vs Team B, the first player of Team A is fed a ball. He/she hits the ball across the net and runs to the end of his/her line so that the second player can step in and play the ball returned by Team B's first player. So all players 'hit and run', as I like to tell my students.
Here's the twist: if a player misses, they get a letter. First time: letter O. Second time: letter U. And you can probably see where this is going: if a player gets the third letter, T, they are O-U-T and sit out while the game continues. Last player left standing wins.