Shepherd pass: ability tuning for augmented sports using ball-shaped quadcopter.

\"Shepherd Pass\" is a method of tuning sport abilities that focuses on passing a ball. The method can be used to overcome skill gaps between the players for design novel sport games. Sports have been changed by technological innovations. Professional players are improving their skills using updated tools, clothing, and training methods. These innovations can help those who enjoy leisure sports as a way to promote communication or better health. Augmented sports is terms of designing novel sports with augmented fields, tools, or players using information technology. Our research involve the use of information technology to tune the sports abilities of expert and non-expert players to fill gaps in their skills and enable a freer sports design. We developed a self-actuated ball that flies via a ball-shaped quadcopter. The ball can change its speed and trajectory based on a players skill. In this paper, we explain the design concept and implementation of this system, and discuss the user experience and future research directions.