The first division of Japan rugby's new three-tier professional league, set to start in January 2022, will be composed of 12 teams, the Japan Rugby Football Union said Friday.The JRFU revealed further plans for its new domestic competition, which will initially include teams from the top two divisions of corporate rugby, the 16-team Top League and the nine-team Top Challenge League.The top 12 sides will be split into two groups of six and play two games against each of the five other teams in their group. They will also play one game against each team from the other group.The second divisio…READ FULL ARTICLE