Wallyball

Two service areas are on each side, extending across the entire width of the court and 1 foot from each end wall.

The ball is spherical, weighs between 9 and 10 ounces (255 and 283 g), and is 25 to 27 inches (64 to 69 cm) in circumference (the same size as a regular volleyball).

In addition, varying the number of touches before the ball is hit over the net is crucial.

Rotation on hand sets is watched closely and receiving the ball must be done cleanly.

[citation needed] Players have been putting legal spin on serves, spikes, and placed hits in wallyball since the sport was invented.

The ball must pop off the players hand (not roll on it) to be a good, clean hit with spin.

Once the ball is crossing the net though, it must comply with the one wall, no ceiling requirement, or it is considered out of bounds.

While not part of the official rules, many feel it adds a chaotic and fun addition to the game.

2000) state, incorrectly [citation needed], in their definitions of "wallyball," that the ball may contact the ceiling before crossing the net.

The player in the back position of the court puts the ball in play by hitting it with one hand only or any part of his or her arm.

If the players are discovered out of order, the game stops immediately, any points scored while the server was in an illegal position are canceled, and a side-out is declared.