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.
During the 1970s, the average time of a Major League Baseball game was approximately 2 hours and 30 minutes. The increase is related to several factors, including increased time between innings for TV and radio commercials. However, players also take longer between at bats and between pitches.