Shoulder injuries are common in baseball due to the rotator cuffs repetitive eccentric contractions through the deceleration phase. Shoulder strengthening programs are crucial in overhead throwing athletes to strengthen the concentric and eccentric arm musculature for performance enhancement and injury prevention. The purpose of the study was to compare Crossover Symmetry and Jaeger J-Bands to determine if significant internal and external rotation range of motion (ROM), strength and torque increases occurred. The results demonstrated significant increases in internal and external rotation ROM and strength in the experimental groups. Overall, the findings suggest time is the main factor in shoulder strengthening rather than the program.