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.
The changes helped cut the average game length by 12 minutes, from three hours and eight minutes in 2014 to two hours and 56 minutes a year ago â but baseball games were still more than 20 minutes longer than the average NHL game and 40 minutes longer than the average NBA game.