Kenny Jackett knows there is plenty for Pompey to work on following defeat to Oxford.
Coupled with the previous week’s Blackpool reverse, it means they have suffered successive losses for the first time this term.
Cameron Brannagan and James Henry struck to give the hosts a commanding interval lead at the Kassam Stadium.
An acrobatic effort from substitute Brett Pitman proved nothing more than a consolation and Jackett wants to see better at both ends of the pitch.
The Blues boss said: “We competed well in the first half and didn’t give Oxford too much, although we were lacking in scoring opportunities.
“But we’ve had games like that this season – particularly in the first half – and got to the break without conceding.
"I don’t think we really did enough with our possession and couldn’t quite find that incisive pass to trouble them."
“Their first goal had some quality, but we had long enough to be able to clear the second and should have done better.
“We got one back following good work from Louis and Brett, but there was still a lack of clear-cut chances after that.
“I don’t think we really did enough with our possession and couldn’t quite find that incisive pass to trouble them.
“We haven’t had too many troubles defensively in the past two games, but our combinations up front are obviously something we need to work on.”
Jamal Lowe played through the middle against Oxford, flanked by Ronan Curtis and David Wheeler in the forward line.
Jackett said: “It was a defeat the previous week, so we changed it and tried to use the mobility of those guys in the front three.
“I can’t say that it particularly worked, but if we’d not given any goals away then we’d have had longer to look at it.”