The designated hitter. Used to replace pitchers in the batting order in modern Baseball(only American League Teams).
There are three innings.
A regulation game is 9 innings, but there are no ties in baseball. They will as many innings as necessary until a winner is declared.
9 innings. Same as in professional baseball.
There are 9 innings in college baseball.
9 innings in a regular game
33 innings long
Yes if it is tied after 9 innings.