Try this Foam Roller Exercise to Increase Overhead Mobility

In this exercise, you will be using a foam roller to activate the serratus interior muscle - this is the muscle involved in the performance of many overhead movements like throwing a baseball or pressing a barbell overhead. 

The muscle assists with rotating the scapula upwards and tilting it backwards which is important for optimal overhead function. It also protracts the scapula during arm function and therefore is commonly known as the “boxer’s muscle”. If you'd like to purchase a roller for yourself, you can head over here. As an Amazon Associate, Rehabilitation Health earns from qualifying Amazon purchases.