London - Former England coach Clive Woodward has urged the Six Nations to become a straight five-week tournament to boost Europe's chances of producing another World Cup-winning side.
Woodward is the only northern hemisphere coach to have been in charge of a World Cup-winning side, guiding his native England to glory in the 2003 final against Australia -- whose then coach Eddie Jones is now in charge of England.
The Six Nations starts this weekend but does not finish until March 18, with 'rest weeks' built into the tournament.
And that is no way to prepare for a World Cup, according to Woodward.
"At the last World Cup (in England in 2015), Europe produced zero semi-finalists," Woodward wrote in his Daily Mail column published Thursday.
"Only one European team (England) has ever been ranked No 1 in the world. The big question we should be asking is why?
"The Six Nations needs to look at the bigger picture and offer a platform from which European teams can collectively take on the world.
"It needs an upgrade and must become a straight, five-week tournament from next year onwards."
Woodward pointed to the schedule Australia endured on their way to reaching a 2015 World Cup final where they lost to New Zealand as something Europe's elite needed to replicate on an annual basis.
"When Australia reached the final in 2015 they played six huge matches -- Fiji, Wales, England, Scotland, Argentina and New Zealand -- in the space of 39 days.
"That's what happens at World Cups. That's the kind of schedule you deal with.
"In New Zealand this summer the rump of the (British and Irish) Lions team will play the Crusaders, New Zealand Maori and the full three-Test series in 29 days. Let's just say that will be no picnic, either."
Former England and Lions centre Woodward also called for an end to the competition's 'closed shop' saying it was time to introduce promotion and relegation so that emerging countries such as Georgia had a target to aim at.
"Let's have a relegation play-off each season...Nobody should be immune from failure," he insisted.
"It isn't acceptable any more that Georgia can win eight of the last nine European Nations championships yet be denied the chance to play off for a place in the Six Nations."