Andy Hessenthaler lauded keeper Alex Cisak’s display as Leyton Orient struggled to live with Pompey.
The assistant boss believes the former Blues loanee made some ‘fantastic’ saves to keep his old side at bay on Saturday.
And Hessenthaler admitted Orient struggled to contain the visitors after skipper was Mathieu Baudry was sent off in their 3-2 win.
He said: ‘Alex Cisak made some fantastic saves and that is what he is there for, we’ll always tell you that.
‘He is the last line of defence, so when players do get in we are hoping he will make those saves.
‘At times Portsmouth did get in too easy and fair play to them, they caused us more problems when Baudry went off.
‘We just didn’t seem to be able to cope. That is why we changed it.
‘Unfortunately we had to take Jay Simpson off because he had a tight calf and he could be struggling for us now which is a big blow.
‘We put an extra body in midfield to try to stop their flow.’
Hessenthaler became embroiled in a bizarre clash with Orient president Francesco Becchetti on the full-time whistle on Saturday.
The two clashed as Becchetti went to take to the pitch to celebrate his side’s success over Pompey.
Hessenthaler said: ‘It is Boxing Day to be fair! It was nothing, it is fine.
‘It was just a little bit of banter that has been going on between us over the past few weeks and it probably looked worse than what it was but it is all good.
‘He is a passionate guy, you can see that.
‘We are all passionate. I am, all the coaching staff are and the players are as well as the fans.
‘We are all desperate to win, so it was a little bit of fun and games at the end.
‘We have to concentrate on what we are doing.
‘But like I say, he is a passionate guy and he wants Leyton Orient to do very well.’
– JORDAN CROSS