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.
Getty Images. Early on, the length of Major League Baseball games is at an all-time high and the new replay system appears to be a big reason for the slowed down pace. So far, there have been 48 games played with instant replay and those games have averaged 3 hours, 5 minutes.