Neal Ardley felt the key to AFC Wimbledon’s victory was keeping two of Pompey’s danger men quiet.
The Dons boss identified the main threats in the Blues ranks as Jed Wallace and Matt Tubbs, who spent the first half of the season at Kingsmeadow.
How often when he was here did you see Matt Tubbs hardly have a chance?Neal Ardley
But Ardley revealed his charges had worked on nullifying the pair in training and the work had paid off.
He said: ‘How often when he was here did you see Matt Tubbs hardly have a chance?
‘He had one glancing header that Ross Worner saved well but other than that, we kept him quiet.
‘But it was a good defensive display. We also kept Jed Wallace quiet, who has been a major part of their revival with his form.
‘We worked on it. That doesn’t happen by chance.
‘We played 11 v 11 in training but I stopped it loads of times and dug them out.
‘I was quite aggressive with them because I knew what we wanted to do to win the game and how we were going to do it.
‘So we’re delighted with the win.’
While it was not exactly a game for purists, Ardley made no apologies and felt it was a typical Wimbledon display.
He said: ‘It doesn’t matter how you do it – you just win.
‘It’s been a tough three weeks with injuries and suspensions.
‘But I fancied us to win. It’s typical Wimbledon style.
‘When the going gets tough, we respond.
‘You didn’t realise how strong the wind was against us in that first half.
‘I thought I would take 0-0 at half-time because I thought if they have anything about them, they will keep us penned in.
‘We were feeding on scraps for a bit and had to do our jobs to stay in the game.
‘But it was a great goal from Tanner and we got our noses in front.
‘Then in the second half, we knew they had to chase the game a bit more and we got more chances.
‘But we’ve ended a tough week with a good win.’