In MLB, a player is considered a rookie if they start a season with A) no more than 130 at bats in major league games (for non-pitchers), or B) no more than 50 innings pitched in major league games (for pitchers), or C) no more than 45 days on the active roster of a team(s) between the beginning of a season and August 31 (for pitchers and non-pitchers).
Generally there are 12 pitchers on the 40 man roster for a major league team.
major league is 60 feet
it depends, most of the time yes
60ft 6 inches
Major League pitchers throw at an average of 91.1mph.
60 feet, 6 inches