Havant suffered late heartbreak as they slipped to a 14-7 National three London & south east defeat at London Irish Amateurs.
The visitors led with just three minutes remaining before the home side snatched victory at the death.
‘It is hugely frustrating,’ said Havant director of rugby Will Knight.
‘That was our best performance of the season by a mile and I feel a number of crucial decisions didn’t go our way.
‘We destroyed them in the scrummage but got very little for it from the official.
‘It is still a real mark of the progress we have made because they beat us by 88 points earlier in the season.’
Winger Jaryd Robinson intercepted and ran the length of the field for a third-minute try – converted by James Read.
The visitors led 7-6 at the break and – despite having outside centre Darren Bamford yellow carded – they still held the lead seconds from the end.
However, the home side went over for a try after Havant were penalised for a high tackle.
And they then added a drop goal, just before full-time.
Elsewhere, London two south west leaders Gosport & Fareham took revenge on Camberley.
The league leaders won 40-0 against the only side to beat them before Christmas.
‘To win and not concede is a fantastic result,’ said head coach Mark Wells.
‘In the last month we have trained 16 times and the extra fitness paid dividends.’
First half tries by Wes Dugan, Jonathan Wood and Ryan Thorne – along with a penalty and conversion from full-back Andy Vance – put the visitors in the box seat.
Dugan grabbed his second try in the second period, with Chris Thompson, Sam Foster and a penalty try completing the rout.
Southsea Nomads face a huge battle for survival in Hampshire one after they lost 74-11 to Farnborough.
Winger Tim Ayles crossed for a try and Aaron Beesley kicked two penalties before indiscipline cost Nomads dear. Lee Tindal was sin-binned and in the following 10 minutes Farnborough racked up 24 points.
Meanwhile, fourth-placed United Services maintained their promotion challenge with an excellent 34-15 win over Isle of Wight at Burnaby Road.
Services laid the foundations for the win in the first half with tries from lock-forward Dainius Battrukeenas, centre Nick Bentley and a double by winger Jack Brawn.
The second period was marred by handling errors but full-back Martin Hoskins crashed over for a final Services try in the dying minutes.