Have you ever wondered what balls are similar in size? Which ones are larger or smaller than others?

Squash is a racquet sport played by two or four players in a four-walled court with a small, hollow rubber ball. The players must alternate in striking the ball with their racquet and hit the ball onto the playable surfaces of the four walls of the court. The ball equipment for squash has two types of balls, one for competition and one for club games. The balls are fairly similar with only minor details in differences.

Canoe Polo also known as Kayak Polo is one of the competitive disciplines of canoeing, known simply as “polo” by its aficionados. Polo combines canoeing and ball handling skills with an exciting contact team game, where tactics and positional play are as important as the speed and fitness of the individual athletes. Section 38 of the International Canoe Polo Federation’s sets the specifications for balls to be used in the sport of Canoe Polo, also known as Kayak Polo. The 2013 Competition Rules for The Ball state the following:

Many lottery organizations, including the Ontario Lottery and Gaming Corporation, use the Smartplay International rubber balls to ensure that the winning numbers drawn are completely random. In addition to the machines used for the drawing, the testing procedure and the safeguard procedures followed by the personnel, the consistency and testing of each set of balls is critical to the fairness of the draw.