Abstract
Sports applications in Virtual Reality (VR) have become immensely popular for training skill-based sports like table tennis. However, the existing researches do not focus on designing an intuitive system for efficient communication between the trainee and the coach. We developed a VR table tennis training system for table tennis skill acquisition that focuses on helping coaches to convey a trainee's mistake clearly. Our system consists of a VR training system where trainees can learn a skill gradually and a web-based feedback annotative tool for coaches. Trainees can examine their mistakes through a tablet or an immersive VR world.