The Boston Red Sox and Brooklyn Dodgers played a 26 inning game on May 1st of 1920 that ended in a 1-1 tie and was called due to darkness (first MLB night game wasn't played until 1935). Both starting pitchers completed all 26 innings.
There are '9' (nine) innings in a regulation Major-League baseball game, and in most semi-professional, college and high-school leagues as well. At lower levels and for younger players, the number of innings may be reduced to 7, or even 5.
reds
14
33
16+ innings against the bluejays, game is not over, 4/5/12 this is also the most innings played in any opener in the major league
Typically from 1.5 to 2 hours. Most leagues set a time limit
The longest game, innings wise, in MLB history was in 1920 between the Brooklyn Robins and the Boston Braves. It lasted 26 innings and ended in a 1-1 tie.
California
Yes, most major league players make their first great leap to the major leagues from Triple-A affiliates.
Tris Speaker
Nolan Ryan
No, a handful of polished college players go directly to the majors after being drafted, and also most of the Japanese players in the majors never played in the (American) minors.