Tadhg Furlong reckons the first World Cup he can really remember was in 2007 - the same one that his front row colleague Rory Best made his debut in.
It speaks volumes for how long Ireland skipper Best has been playing at the highest level.
"I couldn't say enough about the man," said Furlong, who can't wait to add until Sunday to his one World Cup cap from four years ago.
"In 2007 I would have been 15, I remember catching those games," he said.
"It's kind of mad to think that Rory Best was playing in it, and that's the first one I can distinctly remember in some ways.
"But it probably just shows the longevity in him, perhaps that's a nice way to put it!
"He leads by his actions, he's incredibly good for us as a group of players, and he represents us unbelievably well.
"His attention to detail, how he keeps his body right - for an ageing man of 37 you see him running around in pre-season and he's as fit as a fiddle honest to God.
"I'd go to anywhere and back with him. And I speak for the whole squad in terms of that."
The big Wexford tighthead is regarded as one of the best in the world in his position.
But four years ago he was only two Tests into his Ireland career when he got the nod to play against Romania, his only appearance at World Cup 2015 with Mike Ross still Joe Schmidt's go-to man.
"I suppose I'm not all that experienced either," he reflected.
"So I think it's just trying to stick to what we've worked on throughout the pre-season and into the warm-up games.
"You're not reinventing the wheel, you're trying to do your job as best you can really, and block out as much external noise and distraction as you can to really focus on your performance".
He added: "As a player you build up for a WC for so long, and after small involvements I've had in the last one.
"You're looking forward to it, disappointed you didn't make that quarter-final in Cardiff (against Argentina).
"The other side of that is the Irish support we have over here, and it's incredible in a way.
"No matter where we play, home or away, summer tours down in Australia or South Africa, up in Chicago, the amount of people travelling, people I know myself from back home travelling.
"It's a big expense, a lot of money on the line a lot of time off to take travelling.
"And that's definitely not lost on the players".
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