Japan's top-flight and second-tier rugby teams will compete for the Top League Cup ahead of this year's World Cup, the Japan Rugby Football Union announced Thursday.The Top League Cup, a competition introduced last season, will see 24 teams split into four pools of six. Each team will play five round-robin matches and a team from each group will advance to the knockout stage.Top League and second-division Top Challenge League teams will compete in the same tournament for the first time, according to the JRFU.The tournament, from June 22 to Aug. 10, will conclude more than a month ahead of t…READ FULL ARTICLE