Havant went down 42-32 in a rollercoaster London one south encounter with Maidstone at Hooks Lane.
Will Knight was disappointed to see his troops let the game go after playing some good rugby.
‘We were the better team and should have won it,’ said Havant’s head coach.
‘Our problem was we kept letting Maidstone back in.
‘We didn’t play with enough structure and so the game became far too loose.
‘At times we were not clinical enough to finish off good opportunities and lost focus in defence.
‘You cannot afford to do that against teams who are good enough to exploit it.’
Dave Sweeney gave Havant a dream start with a cracking individual try.
The rest of the half saw both teams score at regular intervals with Loz Blackburn and Darren Bamford crossing for the home side.
Havant’s second-half try was scored by Jerome Trail but Maidstone powered clear.
‘The players were incredibly disappointed, which I suppose is a good sign,’ said Knight.
‘They know it was a game they are capable of winning.
‘Maidstone beat us heavily at their place, so it shows the progress we have made.’
Portsmouth moved up to fifth spot in London two south west with an excellent 37-20 win over KCS Old Boys at Rugby Camp.
A slow start saw the hosts trailing by eight points before Andy Barnes got them off the mark with a penalty.
KCS notched another try but Anthony Fooks scored on the stroke of half-time.
After trailing 13-10, Portsmouth took charge in the second period.
Barnes knocked over another penalty before Jackson Clark and Tom Chance tries put them 27-13 up.
The visitors hit back but Portsmouth sealed the win late on.
Barnes added a penalty and Greg Hoolihan went over for a try at the death.