Michael Appleton felt Pompey paid the price for their ‘kamikaze’ approach as they chased a point against Middlesbrough.
The Blues went down to a 3-1 defeat at Fratton Park today against the play-off-chasing outfit.
Pompey fell two goals behind in the second-half, but pulled a goal back from the spot through Greg Halford.
That looked to set the game up for a grandstand finale, until Marvin Emnes punished Pompey with eight minutes left as they poured forward.
Appleton felt his men were rash in the manner they chased the game.
He said: ‘We were kamikaze in the last 20 minutes.
‘We got back to 2-1 and we didn’t need to do that. We were a bit gung-ho.
‘We’ve got the experience in the dressing room not to do that sort of thing.’
Appleton also disputed Middlesbrough’s penalty, which opened the scoring.
Ricardo Rocha was judged to have pulled down Seb Hines, allowing Barry Robson to fire home.
Appleton said: ‘The referee made some contentious decisions.
‘We didn’t think it was a penalty.’