Furthermore, this might be interesting. Quotes below:
http://www.mlb.com/documents/7/9/4/2...all_052418.pdf
Generally, for a specific launch
angle and exit velocity, we see that the distance traveled is generally greatest
for 2017, followed by 2016, and 2015b. The increase in distance from 2016 to
2017 can be as large as five feet for exit velocities near 102 mph and launch
angles near 29 degrees. This increased distance in batted balls is consistent
with the increase in the home runs in the last two seasons
The important takeaway from this analysis is the following: Had the drag
properties of the baseballs in 2015b and 2016 been identical to those in 2017,
the home run rate would have been the same in all three periods. This result
lends further support to the conclusion that the the reason for the increase
in home runs 2015b-2017 is due to reduced drag on the baseballs.