You can use the ball as defense in the sport of dodgeball.
The sport of bowling.
The sport of bowling.
Beach
There is a "double-yellow dot" ball currently used in the sport of squash.
hurling
cricket
volleyball
volleyball
lacrosse
Squash
The sport baseball typically uses the phrase 'play ball'. The phrase 'play ball' is widely used in anything from little league baseball to major league baseball.
Table tennis (ping pong)