David Kagan provides a good definition of a juiced ball, and shows that today’s ball is not juiced enough to explain the increase in home runs.

There are two distinct interactions that determine the distance a baseball will travel. The first is the collision with the bat, which determines exit velocity of the ball, the launch angle, and the spray angle, as well as the spin on the ball. The second interaction is between the air and the ball during the flight.

The drag coefficient is only relevant to the flight of the ball and has nothing to do with the ball-bat collision. The term “juiced ball” doesn’t refer to properties associated with the flight of the ball but instead is associated with the collision. Drag is associated with the flight of the ball, while a juiced ball is related to the ball-bat collision.

THT.FanGraphs.com

His collusion conclusion is that “juicing” is only adding two feet of flight to the ball, compared to the 15.4 feet extra the ball is traveling.