Introducing Spinfire Pro 2 We’ve taken the best all-round ball machine and made it even better. Tennis ball machines are a fantastic way to practice and improve your game, regardless of your skill level. The Spinfire Pro 2 makes it easy to practice a wide range of shots, test yourself with a variety of paces, spins and elevations, and build your mobility and fitness with practice drills. With a number of improvements over the original version, the Spinfire Pro 2 offers things you’d normally only find on a much more expensive machine. It includes internal movement, 150-ball capacity, an easy-to-use control panel, remote control and fully programmable app with AI Drill Creator all wrapped up in an extremely stylish and compact design.