Tadashi Otsuka Badminton DVD Tadashi Otsuka's Overhead Improvement Techniques 5 Shots to Disrupt the Receiver's Timing and Take Control DISC.1 Overhead Strokes (Basic) DISC.2 Overhead Strokes (Advanced) Racquet Work and Footwork Training Methods to Control Speed I watched it a few times and then stored it at home. The case has scratches. The DVD has been tested and works. Thank you for your consideration.