From helmets to shoes, 3D printing is beginning to appear more frequently in the world of sports. The NFL would like to see even more of it, particularly in the interest of reducing injuries. Customized, properly fitting shoes and helmets can go a long way in terms of injury prevention, and those aren't the only way technology such as 3D printing is transforming sports. Find out more at 3DPrint.com: http://3dprint.com/179528/3d-printin...sional-sports/