Japan Rugby League One, formerly known as the Top League, is a rugby union competition in Japan. It is the highest level of professional rugby competition in the country. The Japan Rugby Football Union created the competition in 2003, by absorbing the Japan Company Rugby Football Championship. The chief architect of the league was Hiroaki Shukuzawa who strongly felt the urgency of improving Japanese domestic company rugby to a professional level which would allow Japan to compete more convincingly at Rugby World Cups.
The Kobelco Kobe Steelers are a Japanese rugby union team owned by Kobe Steel, and based in Kobe. They were the first ever Top League champions when the League started in the 2003-2004 season. The team rebranded as Kobelco Kobe Steelers ahead of the rebranding of the Top League to the Japan Rugby League One in 2022.
Toshiba Brave Lupus Tokyo is a Japanese rugby union team in the Japan Rugby League One. They are based in Fuchu, Tokyo, as is their local rival Suntory Sungoliath. They won the second ever Top League championship in the 2004-5 season and the Microsoft Cup in 2005 under their innovative and inventive coach Masahiro Kunda, himself a former hooker for Toshiba and Japan. They are particularly known for the strength of their mauls. Before the Top League was created, the team was called Toshiba Fuchu after their location. Their slogan for 2006 season was "Once again to the Pinnacle (Restart)". The team rebranded as Toshiba Brave Lupus Tokyo ahead of the rebranding of the Top League to Japan Rugby League One in 2022.
Shizuoka Blue Revs are a rugby union team based in Iwata, Shizuoka, Japan. The team came second behind Toshiba Brave Lupus in the second season of Japanese rugby's Top League (2004–05). They were coached by former All Black Grant Batty and Fijian player-coach Tabai Matson. Founded in 1984, its name was "Yamaha Motors Rugby Football Club". The team rebranded as the Shizuoka Blue Revs ahead of the rebranding of the Top League to the Japan Rugby League One in 2022.
NEC Green Rockets Tokatsu is a Japanese rugby union team in the Japan Rugby League One. The team's captain is Ryota Asano. The previous captain was Takuro Miuchi, who was also the captain of the Japan national rugby union team. Before the semi-professional Top League was created, the team was just known as "NEC". The amateur club was founded in 1985 in the Kantō region.
Black Rams Tokyo is a Japanese rugby union team in the Japan Rugby League One. Being ranked tenth meant that, in order to continue in the league, it had to defeat one of the top regional clubs in a play-off, which it achieved.
Saitama Wild Knights is a Japanese rugby union team formerly based in Ōta city, Gunma prefecture which played in the Top League. In 2021 it relocated 13 kilometers south to Kumagaya, Saitama prefecture, and rebranded as Saitama Wild Knights accordingly. It now plays in Japan Rugby League One.
Kubota Spears Funabashi Tokyo Bay is a Japanese rugby union team based in Funabashi, Chiba participating in the Japan Rugby League One. The team rebranded as Kubota Spears Funabashi Tokyo Bay ahead of the rebranding of the Top League as the Japan Rugby League One in 2022.
Toyota Industries Shuttles Aichi is a Japanese rugby team owned by Toyota Industries. They were promoted to Japan's top-flight league Top League for the first time in the 2010-11 season. Its home base is Kariya City. The team rebranded as Toyota Industries Shuttles Aichi ahead of the rebranding of the Top League to the Japan Rugby League One in 2022.
Mie Honda Heat is a Japanese rugby union team based in Suzuka City, Mie Prefecture, Japan. The owner of the club is Honda Motor.
Urayasu D-Rocks, commonly known as the D-Rocks, or the Shining Arcs, is a rugby union team owned by NTT Communications and is part of Japan's Rugby League One competition, currently in Division 2. Given the name, the team is based in Urayasu City, Chiba Prefecture in the Kantō region. The team has undergone several re-brands throughout is history, most recently in 2022, rebranding from Shining Arcs Tokyo-Bay Urayasu in line with the newly formed Japan Rugby League One competition in 2021/22, to the Urayasu D-Rocks in 2022 onwards.
NTT DoCoMo Red Hurricanes Osaka is a Japanese rugby union team owned by NTT DoCoMo. They qualified for the 2011–12 season and finished 12th place overall. The team rebranded in 2022, ahead of the rebranding of the Top League to the Japan Rugby League One.
The Yokohama Canon Eagles is a Japanese rugby union team founded in 1981 that competes in the Japan Rugby League One and is owned by Canon. The team was previously based in Machida, Tokyo, Japan. According to the official website, it was founded as Canon Rugby Team in 1980, and determined the nickname Eagles in 2010. The team moved to Yokohama ahead of the rebranding of the Top League in 2022, becoming the Yokohama Canon Eagles.
Skyactivs Hiroshima are a Japanese rugby union team who compete in the Japan Rugby League One. They were formerly owned by car manufacturers Mazda based in Fuchū, Hiroshima, Japan. The team rebranded as Skyactivs Hiroshima, dropping the Mazda name, ahead of the rebranding of the Top League to the Japan Rugby League One in 2022.
The Top Challenge League was a professional rugby union competition in Japan. It was the second-highest level of rugby competition in the country and is a companies league; all the teams are owned by major companies and the players are generally employees of their company. The Japan Rugby Football Union created the Top League Challenge Series in 2003 in order to give teams playing in the second-tier regional leagues a pathway to progress to the top tier Top League; this became the Top Challenge League in 2017 when a second-tier league was introduced. The competition was disbanded following the creation of the fully-professional Japan Rugby League One ahead of 2022, with the Top League and Top Challenge League being absorbed together to form one three division tournament.
The 2018 Top Challenge League was the second season of Japan's second-tier domestic rugby union competition, the Top Challenge League.
Shimizu Koto Blue Sharks – nicknamed the Blue Sharks – are a Japanese rugby union team, currently playing in the Japan Rugby League One. The team is the rugby team of architectural, civil engineering and general contracting firm Shimizu, based in Chūō in Tokyo.
The 2019 Top League Cup was the second edition of the Top League Cup, a rugby union cup competition for Japan's Top League and Top Challenge League teams. This was the first time Top Challenge League teams played in the competition, after the 2018–19 featured Top League teams only.
Jamason Faʻanana-Schultz is a rugby union player who plays as a flanker or number 8. He currently plays for Old Glory DC of Major League Rugby (MLR). Although born in Australia, he has played for the United States national rugby union team, having qualified through his American-born father.
