It is a moment that Terry Devlin will certainly not forget in a hurry.
Pompey had already fought from two goals down at Reading to go in level at the break, courtesy of goals from Tino Anjorin and Colby Bishop.
The second half was just 13 minutes old when Bishop then nodded a Jack Sparkes cross back towards the Northern Irish teenager.
And Devlin volleyed the ball into the roof of the net right in front of almost 3,000 travelling supporters to secure three points on his first league start for the club.
He said: “It hasn’t really hit me yet, but it was an amazing feeling when it went in and the noise the fans made was crazy.
“Sometimes Colby will go for goal there, but thankfully he’s nodded it down and I was there to finish it.
"It hasn’t really hit me yet, but it was an amazing feeling when it went in and the noise the fans made was crazy."
“I’ve been working hard with Zesh after training on timing my runs to get into the box. I’d missed a couple before, but took the chance.
“I don’t think that I’m going to forget that in a hurry – it’s going to have to be a really good moment to top that one.
“To get my first league goal in my first start in my first year in English football is a dream come true for me.
“I was surprised to be told I was in the team on Thursday after being left out on Tuesday night, but it’s about the whole squad if you want to be promoted.
“You need to be ready when you’re called upon and thankfully I was for this one. I slept well the night before and couldn’t wait to get on the pitch.
“We know we’re a good team and could get ourselves back in the game. We just flipped a switch and were confident we could win it.”