Depending on the design problem they address, design patterns can be classified in different categories, of which the main categories are: 1  Creational Patterns. 2  Structural Patterns. 3  Behavioral Patterns.
In the 35 nine-inning games played through last night, the average length of a MLB game has been 2 hours, 52 minutes , according to Michael Teevan, spokesperson for Major League Baseball.
A baseball game lasts 9 innings. (Each side is allowed 3 outs per 1/2 inning. When all 3 outs are made the other team is allowed to bat, and to try and score.) Typically this results in a game between 2 hours (abnormally short) and 4.5 hours (abnormally long) in duration.