Yesterday, JT wrote an indepth look at the current Rays roster's exit velocity, and in the comment section he made a very straightforward statement: "hitting the ball hard will produce better results."
JT is right.
Hitting the ball hard is not only important, but it improves the results. As the statcast era dawns on MLB, we are able to step forward as the observing public from mere PitchFX data to an array of data points around player performance.
With that comes exit velocity, and JT is right on. Hitting the ball hard helps players get better.