When Joe Schmidt took over from Declan Kidney as Ireland head coach in the autumn of 2013, they were still reeling from a record 60-0 thrashing handed out by the All Blacks the previous summer.
It is just one measure of the extraordinary job that Schmidt has done that, ashe prepares his team for what could be his final match in charge against the same opposition in Tokyo on Saturday, they have won two of their past three Tests against New Zealand.
There can be no debate that the 54-year-old is the greatest coach in Irish rugby history. Schmidt's impact - four titles in as many years with Leinster, three Six Nations crowns in six years (including winning the grand slam at Twickenham last year) with Ireland, a complete overhaul of the provincial system together with Irish Rugby Football Union performance director David Nucifora - is well documented.
He has raised a country's expectations; completely changed their mindset.
But what drives Schmidt? What drives the man driving Irish rugby?
That is less well known. Schmidt speaks very little about his upbringing in Woodville, near Palmerston North. One of eight children, he was actually born in Kawakawa, Northland, moving to Woodville later.
This is Smallville, even by New Zealand standards. After winning the first of his three Six Nations titles, he joked that it was "pretty hard [to imagine] when you're born in Kawakawa, 1,400 people and you're shifted to the metropolis of Woodville - 1,600 people. It's huge."
Rugby was always a potential escape route, and Schmidt desperately wanted to make it as a player. But he was too small. Not that he accepted it.
Former All Blacks scrum-half Mark Donaldson, who coached Schmidt at provincial club Manawatu, said he tried to break it to Schmidt as gently as he could that he was not going to cut it.
"I sort of laughed and said, 'Look mate, you are really doing well to do what you do in club footy but you just won't make my cut. He went away to the gym - no one was going to the gym in those days - and put on about 11 or 12kg [almost two stone]. He came back the next season a totally different bloke. That is why he is so resilient and resourceful as a coach."
Schmidt is clearly still a frustrated player. He has been known to pull a muscle joining in training with the Ireland team. It is clear that at least some of his siblings match that drive.
Ireland coach Joe Schmidt. Photo / AP
One of his brothers - who he mentioned before the Samoa match - has a doctorate in Pacific Island history. Schmidt visited him in Apia as a teenager. Another is a very successful businessman.
They were clearly close as a family. Schmidt had planned to move back to New Zealand, once his Ireland role ended, to look after his mother, before she died earlier this year. Schmidt played 29 games for Manawatu between 1988 and 1991, the highlight a narrow 28-23 defeat by France in 1989, in which Schmidt scored.
But it was clear, even before an Achilles tendon injury in his mid-20s finished him off as a player, that his talents lay elsewhere.
Again, Schmidt's drive, commitment and ability with people shine through in the story of how he first left New Zealand, and discovered his real calling. Aged 24, having trained as a teacher, Donaldson recommended the young winger to a player-coach role in Westmeath, Ireland.
Schmidt, who went over with his wife Kellie, rapidly transformed Mullingar RFC's fortunes.
"It was an eye-opener," recalled Willie Macken, who played as a winger with the team. "All of a sudden, from just running with a ball, as junior rugby was all about back then, we had to play with a ball."
Macken said that between one session and the next Schmidt raised the ball count from four between four teams to upwards of 50.
There can be no better measure of his coaching abilities, first exhibited as an ambitious 24-year-old, that seven survivors from that record 60-0 loss - Rory Best, Johnny Sexton, Conor Murray, Cian Healy, Rob Kearney, Keith Earls and Peter O'Mahony - are likely to start in Saturday's quarter-final.
