日本ラグビーフットボール選手権大会
The Top League Championship is Japan's highest-level knockout tournament for rugby union clubs. Held annually, the leading teams from the Top League regular season qualify for the playoffs to decide the Cup title. From 2018 onward, the All-Japan Rugby Football Championship has doubled as the Top League Championship Cup. Previously, teams competed for the Lixil Cup, from 2014 to 2016, and Microsoft Cup (prior to 2009).