Michael Appleton was adamant Pompey deserved something from their trip to Sheffield United.
But the Blues boss had no argument with the penalty which sent his side tumbling to a 1-0 loss tonight at Bramall Lane.
Appleton’s men delivered an enterprising performance for long periods against the unbeaten Blades.
But Lubomir Michalik’s lunge on Chris Porter allowed Nick Blackman to score a 65th-minute penalty in the game’s crucial moment.
Appleton said: ‘I thought we deserved a point at the very minimum from the game.
‘In the end, a mistake at the back cost us.
‘It was a penalty as far as I was concerned.
‘They didn’t really trouble us apart from that.’
Scott Allan returned to Fratton Park on loan and made an outstanding second Pompey debut.
The home side couldn’t get to grips with the Scot’s trickery as he operated behind Izale McLeod.
Appleton said: ‘Scott Allan was unplayable at times. It’s great to have him back.’