MLB commiossioner Rob Manfred will be taking five immediate actions after a study revealed that the baseballs have gotten more aerodynamic during the current home run surge.
There were an all-time high 6,105 home runs hit during the 2017 season, up from 5,610 in 2016 and 4,909 in 2015.
The study, which was conducted by a committee of scientists on the increases of the home run rate since 2015, was assembled by Manfred in August of 2017 and included chairman Alan Nathan, the Professor of Physics Emeritus at the University of Illinois, and nine other experts.
Working independent of the commissioner's office, the committee investigated properties of the baseball, weather conditions, and changes in player behavior, among other things. They also inspected Rawlings' production plant in Costa Rica.
The committee concluded that the home run increase was due "at least in part, to a change in the aerodynamic properties of the baseball," though it wasn't due to "a change in launch conditions."
The committee also concluded that "no change to the materials or manufacturing process, whether intentional or unintentional, has played a significant role in the home run surge."
Based on the findings of the committee's investigation, the commissioner is taking the following actions, as outlined in MLB's press release: