John Mousinho called on his Portsmouth team to be more ruthless after seeing them beat Exeter 1-0 at Fratton Park.
Colby Bishop’s second-half strike was enough to settle a keenly contested game.
Mousinho said: “I thought we were excellent in the first half. The only thing we didn’t do was put the ball in the back of the net.
“It was a different story in the second half. Exeter made some changes which I thought would leave them a bit exposed in places for the counter-attack.
“If I could criticise anything, it’s that we need to take our chances. We had some good opportunities up to and after the goal.
“We also have to learn to manage the game better. We didn’t do that particularly well in the last 10 minutes.
“We made some rash decisions and although we are a youngish team, I think we’ve got enough experience on the pitch to deal with it.
“Having said that, it was a well-deserved win off the back of a totally different game at the weekend. I’m absolutely thrilled.”
With both sides coming into the game unbeaten, it was Bishop who ended Exeter’s run with the only goal 20 minutes from time.
He rifled home from just inside the box after picking up substitute Jack Sparkes’ pass with his back to goal.
Exeter boss Gary Caldwell said: “We weren’t ourselves in possession tonight. We can play much better but, having said that, in the first half, we were dogged and resilient and defended the box very well.
“We improved in the second half. Most of the chances were from set pieces and I thought those chances were better than our overall performance.
“It’s a newly formed squad, we’re still developing in terms of partnerships, have come to a big stadium for the first time and we have to learn from experience.
“We didn’t make good decisions throughout the game. We kicked long when we could have played out and played out when we should have played long. We’ll analyse it as a group but I want them to be braver, to be a team.
“Their keeper has made some good saves and sometimes it just doesn’t go your way. Even when we are not at our best, our set-pieces cause teams problems.”
