All that we can do is try to compel people to come play our game. With volleyball, you can sex-it-up to make it more appealing to J&A. Volleyball becomes Beach-Volleyball. Red versus blue becomes shirts versus skins. Let J&A know that there are positions available to fill, and that you're willing to help them get settled in.
Hey, let's all play volleyball! Volleyball is great! Hey, Jake and Ashish are over there playing soccer. That hurts my feelings. I think soccer needs to die. Volleyball would be so much better if Jake and Ashish would come play with us.