5 ounces
An official soft baseball (or practice ball) still conforms to the official size and weight of the official hard baseball, but it has a synthetic leather cover with a sponge cork and rubber center. These are usually Official T-Ball practice balls. Higher league practice balls still maintain the official size and weight, but contain a full-grain leather cover with a wound cork and rubber center.
Weight of a baseball According to the rules of Baseball, "It shall weigh not less than five nor more than 5 1/4 ounces avoirdupois"
Weight of a Major League Baseball According to the rule book, a baseball must weigh at least 5 ounces and can not exceed 5.25 ounces. Official balls must weigh between 5 and 5 1/4 ounces.
There is no official weight for middle school, it depends on area.
Official softball weight is 6.8 oz
The weight of a single baseball would be measured in grams (g).
An official baseball is 5 oz. and an Official Softball is 6.8oz.
The official Baseball used in the Major Leagues up to 1976 was A Spalding
no.
52 kilos
On the Rawlings website, you can buy a "Rawlings ROLB Official League Baseball." Thus ROLB = Rawlings Official League Baseball
An umpire