Havant paid the price for a poor performance as they were thumped 88-7 by London Irish Amateur in National League three London & south east at Hooks Lane.
Director of Rugby Will Knight offered no excuses for the heavy defeat.
‘We put in a poor performance against a decent side,’ said Knight.
‘There was a lot of falling off tackles by us and they had a field day.
‘In the first few weeks, our wide defence has been wanting and it is something we will need to look at.
‘It is certainly up there with the heaviest points defeats in the club’s history.
‘I think it shows where we are at and the amount of hard work that needs to be done.
‘A number of experienced players walked away from the club during the summer and we have not been able to replace them.
‘Amidst all the doom and gloom, though, there were some bright spots.
‘Eighteen-year-old second row Ross Parkins did well on his debut and Nick Goodger had a positive game at number six.’
United Services moved into third-place in Hampshire One as they hammered newly-promoted Southsea Nomads 63-18 at Burnaby Road.
Nomads have conceded 107 points in their two games.
Petersfield notched a first win with an 11-9 win at Farnborough.
Full-back Jay Bremner kicked two first-half penalties before replacement George Aldridge grabbed the all-important try after the interval.