Pro Source Pitching, Advanced Concepts DVD How does a good player develop into an all-star? How do good teams become champions? What qualities do all great players and coaches possess? We know. Pro Source Baseball has the edge. That edge is experience. Where you want to go we've been, and we'll show you how to get there. The Pitching, Advanced Concepts DVD focuses on fundamental and advanced mechanical drills to improve velocity and control. Properly prepare as a pitcher with arm strengthening exercises and stretches. Focus on the proper way to field position as a pitcher and what to look for in a hitter's swing to get them out consistently. Features Major League pitchers Aaron Rakers, Jimmy Serrano, Brandon Agamennone and Jimmy Plexico. Approx. 40 minutes in length.