Who knows?!?

All I can say is atleast AJ is having fun. She may look a little dorky at times but there is usually a smile on her face.
KD is showing off for the camera while she waits for AJ to finally get the ball back to her.
KD is teaching Uncle Bubba how to play ball in the backyard without kicking it over the fence. She knows if it goes over the fence. The dog next door will EAT her ball.

Here, Uncle Bubba is trying to help KD just in case she misses. I see now why KD misses, her eyes are closed.
Uncle Bubba needed to take a break. The girls wore him out. He probably hasn't actually played ball for 30 years.