Which passage from the article best supports the idea that it can be tough to score points in pickleball?

Nearly 60 years later, about 5 million Americans play pickleball.
If your foot—even just a toe—happens to be in the NVZ, that's a fault.
You hit the ball with a paddle instead of a racket.
So they whipped up a game with ping-pong paddles and a plastic ball.

If your foot—even just a toe—happens to be in the NVZ, that's a fault.