Kal Naismith revealed his 'terrible' penalty miss at Newport County last season is the most embarrassing moment of his career.
The attacker skied his spot-kick over the bar when Pompey were trailing 2-1 at Rodney Parade.
However, Naismith made up for the gaffe by netting an 87th-minute winner for the Blues in the 3-2 victory.
The Scot admitted the miss was a 'horrible moment.'
He told Express.co.uk: 'Newport away last year was a massive game for us in trying to secure a play-off spot and to get promoted.
'I think it was 2-1 to Newport at the time and we got a penalty with a chance to make it 2-2.
'I missed the penalty, put it over the bar, right in front of the Portsmouth fans.
'That was a horrible moment. Pretty embarrassing at the time. It was a terrible penalty. I just floated it over the bar.
'But then we bounced back, got it to 2-2 and I scored the winner to make it 3-2, so it wasn’t all bad in the end.'