When Leinster won their European and Pro14 double in 2018, Caelan Doris was just one game into a professional career that's now just shy of 100 appearances for province and country.
He made his debut in the last game of the Pro14 regular season in 2017/18, getting 20 minutes off the bench in a 47-10 shellacking away to Connacht, a day made famous for John Muldoon kicking the final Connacht conversion, on what his last appearance for the province.
By the time Leinster went on to complete their double at the end of May, Doris was back amongst his academy peers.
Five years on, and the 25-year-old is one of the key drivers in a side who are just three wins away from completing another double.
Home comforts are on their side; Saturday's 35-5 win against the Cell C Sharks was the second of what Leinster hope will be five consecutive weekends in a row at the Aviva Stadium, culminating on 27 May with the URC final.
And while Doris says the Leinster squad aren't getting carried away, the prospect of being able to win two trophies on home soil is huge motivation.
"It's class, the opportunity that we have to lift two trophies here is savage," the back-row forward told RTÉ Sport.
"There's definitely a big motivation for us to do that in front of our home family and support. We love playing here."
The Mayo man was Player of the Match in Saturday's URC quarter-final win, scoring their opening try and beating five defenders during the comfortable win against the Sharks, the latest impressive performance in a season that has seen him nominated for the EPCR's European Player of the Year award.
That win sets up a semi-final against Munster on Saturday, the attendance for which will be capped at 29,000, after the southern province came through a brutally physical game with Glasgow on Saturday night.
Speaking in the immediate aftermath of Leinster's win, Doris was unaware who their next opposition would be at the time, but he says his own team will need to be a lot sharper in the next round.
"An 80-minute performance, and being a bit more ruthless [is needed].
"We managed the yellow card period well and went after them in that period, but let them back into it a bit towards the end. It can be tricky sometimes when you're that bit - three or four tries - ahead to stay ruthless. But there will be tougher opposition and tighter games going forward."
And he echoed his head coach's opinion that their 30-point victory was "scrappy".
"The scoreline probably flatters us a bit, definitely.
"Tough opposition the whole way through the game, they had a disallowed try towards the end. Some pleasing things from us but definitely scrappy. Our ball control towards the end probably wasn't good enough and we're going to need to be better going forward, but at the same time we're exactly where we want to be and there was a lot of good stuff as well.
"Some of our attack was really good, our collisions on both sides of the ball. We spoke about it being a physical battle against South Africa teams in general. Against the Bulls last year it wasn't good enough, so that was a big focus for this week. For the most part that was good. Carries getting us go-forward ball, good breakdown stuff, and lots of good tackles. The contacts were pleasing."
