This paper introduces our VR-based imagery training system. We believe that "experience" is one of the most important factor for improving athletes' performance and skills. Thus, the concept of the proposed system is to improve athletes' performance by enabling experiencing sport scenes by using VR space reconstructed by measured objective data. As the first example case, we realized the concept in baseball setting ; the system can provide experience to batters as if they are standing in the

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... ter's box and facing to the opponent pitcher. Recent study focuses more on skill training. One of the most important advantages of VR is it can fully control stimulus to users. We take account into this advantage and use the VR system not only for imagery training but also skill enhancement.