Bat Weight, Swing Speed and Ball Velocity swing speed stronger players prefer a heavier bat weight Bat Weight, Swing Speed and Ball Velocity moment of inertia http://www.acs.psu.edu/drussell/bats/batw8.html Bat Weight, Swing Speed and Ball Velocity Russell swing speed According to researchers that is true http://www.acs.psu.edu/drussell/bats/batw8.html