All baseballs used in Major League games have the Official Major League Seal on them, and a replica signature of the current commissioner.
100,000
baseball games
162 games in each Major League Baseball Season
162 Major league baseball games are played during a year
There are a number of things that major league baseball player do. They train for upcoming games and participate in the relevant games.
A computer
162 regular season games
162
162
Hank Aaron played in 3,213 major league games, while Babe Ruth played in 2,503 major league games.
In Major League Baseball there is no rule regarding pitcher's rest between games.