Havant paid the price for a poor second half as they suffered a 31-27 loss at London one south leaders Guildford.
Coach Will Knight was disappointed to see his team surrender a winning position after an impressive opening 40 minutes.
‘We led 17-9 at the break and were very much in control,’ said Knight.
‘Unfortunately, we allowed them to score a couple of soft tries and found ourselves on the back foot.
‘The first half showed that if we play to our strengths we are more than capable of beating anyone in our league.’
Havant made a dream start opening up with a try after only two minutes.
Scrum-half Jake Hewitt chipped through for Pat Gains to score in the corner.
Joel Knight added the conversion and though the home side kicked a penalty it was Havant who remained on the front foot.
After a quick tap and go, hooker Jerome Trail made a good 30 to 40 yards before offloading to Joe Davis for a good score under the posts.
Knight’s conversion made it 17-3 with Havant in charge.
A disastrous start to the second half saw Guildford turn the game around with three tries.
Knight added another penalty before Guildford chalked up their bonus-point try five minutes from the end.
Havant added a converted try from Gav Hart at the death.
United Services Portsmouth slumped to a third successive London three south west reverse with a 22-17 defeat at Eastleigh.
Director of rugby Matt Davis believes his team are still heading in the right direction after last season’s promotion.
‘We knew that it wasn’t going to be easy and just have to adapt to the pace at the higher level,’ said Davis.
‘Against Eastleigh we allowed ourselves to be dragged into a forwards dominated game.’
Chris Marriott scored a fine try wide out in the opening minutes and at the death Dougie Randall went over to secure a losing bonus point.
Petersfield proved no match for unbeaten Bognor in Hampshire one and ended up on the end of a 62-0 hammering.
In Hampshire two, a weakened Southsea Nomads endured a 44-0 loss at Ventnor.