WARWICK (Britain) • Japan coach Eddie Jones has fired a stunning broadside at the country's rugby board, accusing it of holding back the sport and casting doubt on its ability to build on the Brave Blossoms' breakthrough World Cup win over South Africa.
He led Japan to their greatest rugby triumph just over a week ago. The 34-32 win over the Springboks prompted nearly 20 million Japanese to tune in to their next match against Scotland that ended in a 45-10 defeat.
The triumph over South Africa was lauded as Japan's "coming of age" as a rugby nation by pundits worldwide but Jones was far less bullish about the 2019 World Cup hosts' prospects.
"The legacy now is how the Japan Rugby Football Union uses the win and how strong it is in developing good coaching systems and improving infrastructure to go forward," the 55-year-old Australian told Kyodo News at Japan's team base in Warwick, England.
"This is like a balloon.
"It can be popped or it can be a real growth spurt. It's entirely the responsibility of the JRFU.
"To keep improving, things have to change.
"I couldn't go back after the World Cup and do what I have done for the last four years because we are not going to improve enough within the current structures. I know enough about rugby to know that."
Jones, who coached Australia to the 2003 World Cup final that was won by England, said the Brave Blossoms were not just a representative team of Japan's top players. They also had to act as a development team and a casualty ward for the injured.
"We've had to use it for rehabilitation and keep injured players with us because we can't send them back (to their domestic teams)," he said. "All those things have to change if Japan wants to be a serious rugby country."
"One of the reasons I decided not to continue was because I didn't think those things could change," he added.
After four years in charge, he will quit Japan after the World Cup to coach the Cape Town-based Stormers in the Southern Hemisphere's Super Rugby competition.
His departure also means that he will not take up an appointment as director of Japan's fledgling Super Rugby team, who are to join an expanded 18-team competition next season.
The new team, who will play three of their games in Singapore, are still unnamed, lack a coach and have yet to unveil a playing list but Super Rugby's governing body Sanzar confirmed them in the draw for the 2016 season on Monday.
"I am surprised Super Rugby is going ahead (with them) but maybe there were legal ramifications," Jones said. "It just hasn't got the right infrastructure in place to be successful and it could end up doing more harm than good."