Darren Cole has admitted he thought it was a joke when he would be starting Rangers' Champions League clash against Bursaspor.
Although the game was a dead rubber with the Gers already assured of third place in Group C and qualification for the Europa League, the 18-year-old defender had not even been on the bench before.
However, assistant boss Ally McCoist then broke the news he would start on the right of a five-man Ibrox defence in Turkey.
Cole held his own in a 1-1 draw but had no inkling he would be brought straight in for his first-team debut.
"I didn't have a clue," he said. "I didn't know anything about starting and it was a massive, massive shock.
"I thought it was a joke but it wasn't. As soon as I saw the team sheet that was me on a high.
Never had a sniff
"I had never had a sniff of the bench before, nothing like that. I was in the squad for the game against Dundee United but that was called off and away to Kilmarnock I was in the stand.
"I just had to get my head down and get on with it.
"I was nervous and trying not to show it but as soon as I started playing and got some touches I was fine.
"The first five or 10 minutes you do think about the occasion but then you just think about your normal game."
Cole, who normally plays centre back and hails from Edinburgh, was talked through the game by experienced duo Davie Weir and Lee McCulloch.
The youngster was then replaced by Jordan McMillan seven minutes from time and is determined to cement his place in the first-team squad.
"It doesn't get much better than that, straight from the under 19s to the first team is a massive step," he said.
"David is like my dad. I get on really well with him and Lee McCulloch and they are the ones who helped me through the game.
"Hopefully I will have nothing to do with the under-19s now and go with the first team. I will just have to wait and see but hopefully it is the first team."