Other balls are placed at random and must touch their neighbors.

During a bounce, using the arrow keys will start the player moving, only after the ball has touched the ground.

His reflection did the same with the tennis ball, until the two balls apparently touched.

Under the rules of that time, there could not be a legal catch if the ball touched two offensive players in succession.

The ball may touch the side walls before reaching the front wall.

The ball may touch any part of the body, but must be hit, not caught or thrown.

The ball could not touch the net on a serve, and games were to 15 points, with no rally scoring.

A pass thrown and caught in one hand between players; the ball does not touch the water.

The ball touched three players' hands in 2.5 seconds and eventually found Drew about 23 feet from the rim.

But the ball touched the line, giving Evert the set.