# How do you measure the circumference of a tennis ball?

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## Regarding this, what size is a normal tennis ball?

Tennis balls must measure from 2.57 to 2.70 inches in diameter and weigh between 1.975 and 2.095 ounces, leaving a bit of wiggle room for differences. Plus, each manufacturer will have a different makeup in the way it weaves the felt, which is often a nylon-wool blend.

Hereof, what size is a tennis ball CM? Modern tennis balls must conform to certain criteria for size, weight, deformation, and bounce criteria to be approved for regulation play. The International Tennis Federation (ITF) defines the official diameter as 6.54–6.86 cm (2.57–2.70 inches). Balls must have masses in the range 56.0–59.4 g (1.98–2.10 ounces).

## Similarly, how big is a baseball in CM?

A baseball is a ball used in the sport of the same name, baseball. It is between 9 inches (22.9 cm) and 9¼ inches (23.5 cm) in circumference (around). The ball weighs 8 ounces.

## What do numbers on tennis balls mean?

Tennis balls have numbers printed on them so players can distinguish their balls from balls coming from another court. Most people play tennis in an area where people are playing on adjacent courts, and it is very possible that more than one court might be using the same brand and type of ball.

## What diameter are lawn tennis balls?

The ITF specifies that the ball must be yellow or white, between 2.5 and 2.8 inches (6.35 and 7.14 cm) in diameter, and between 1.975 and 2.095 ounces (56 and 59.4 grams) in weight.

## Why are tennis balls green?

So the International Tennis Federation (ITF) undertook a study that found that yellow tennis balls were easier for home viewers to see on their screens. An official 1972 ITF rule change required that all regulation balls have a uniform surface and be white or yellow in color.