>"The increase in frequency and efficiency of defensive shifts. According to FanGraphs, teams are shifting at a rate nearly 10 times greater than six years ago" This should be more prominent and is likely the root cause of guys swinging for homeruns more often. Every hitter will eventually fall into a pattern where they're hitting certain pitches to only a certain part of the field. With the increase in data it's muc…
The increase in power hitting is also cyclical in baseball. Remember last time it dropped it was due to changes in drug testing policies and procedures which may also be a cat and mouse game.
I found this:
http://www.highheatstats.com/2013/01/reliving-the-hits-how-h...