The official match ball for the 2014 FIFA World Cup was manufactured by the Adidas company and named the Adidas Brazuca.
the official tennis ball name brand is Wilson
The official rules of table tennis state that the ball must be spherical, with a diameter of 40mm.
It is 9.00-9.25 inches (228.60-234.95 mm) in circumference (2.86-2.94 in or 72.64-74.68 mm in diameter) and masses from 5.00 to 5.25 ounces (141.75 to 148.83 g)a baseball is 9 inches in diam. and weighs 5 ounces.a baseball is 9 inches in diam. and weighs 5 ounces.
The standard weight of an official tennis ball is between 56.0 and 59.4 grams. This is defined by the International Tennis Federation. The gravitational strength of Mars is 38% that of Earth's. So a tennis ball would mass between 21.3 and 22.6 grams on Mars.
The official table tennis ball for tournament play is 40mm in diameter. The circumference can be calculated using 40 mm x pi (3.14) = 125.6 mmThe official ball size was increased from 38 mm following the 2000 Olympics.
You can be an official, line judge, ball boy, towell boy, raquet carrier or an athlete