Surprisingly only 2
everyone of them do. metal bats are illegal in professional baseball. But you use them in college, high school and below.
Every ball pitched is taken out and replaced.
many, but not professional
12
There are four referees in a baseball game.
40
162
There are currently 30 teams.
Baseball bats are usually around 32 inches, that's 0.81 meters. Youth's ones are slightly smaller, say 26 to 31 inches. That's 0.66 to 0.79 metres. Hope this helps. You Have A Good Day.
In the NBA, there are 48 minutes.
It varies from game to game...
That will depend on the size of the baseball bats. Different sizes have different weights and masses.