The beginings for Fantasy Sports Japan started in the late 1980s, when Mr. Ira Stevens began doing research on Japanese Baseball while he was living in Japan. In 1993, a chance meeting between two friends, led Mr. Stevens to be introduced to Brian Mathews, CEO of CDM Fantasy Sports. From that meeting, it was obvious there was an opportunity to develop and promote fantasy sports games in Japan. In 1993, reaearch was started on the Japanese sports market, which eventually led to the establishment of Fantasy Sports Japan.

Fantasy Sports Japan (FSJ Sports), located in Tokyo Japan, was established in January of 1995 and became the first company in the world to develop and launch bi-lingual fantasy sports games. Since 1995 FSJ Sports has become Japan's leading fantasy sports company.

Fantasy Sports Japan's success has been because of its unique partnership with CDM, Inc., the world leader in Fantasy Sports. FSJ and CDM, Inc. jointly develope, market and manage fantasy sports games for Japanese sports fan. Today, FSJ Sports promotes over 10 fantasy games to Japanese sports fans all over the world, via their website, fsjsports.com.