Gosport & Fareham came unstuck in the Bognor mud as they slipped to a 24-3 London south west two defeat.
The visitors ran into yellow card trouble in the first half with Joey Clark and skipper Tim Snowden having spells in the sin-bin.
Bognor opened up a 17-0 lead by the break and though Alex Dunscombe hit back with a penalty at the start of the second half, it was all the visitors could manage.
The hosts weathered the Gosport & Fareham storm and broke out to add a converted try eight minutes from time.
‘The ground conditions were atrocious and it wasn’t conducive to a free-flowing game,’ said Gosport & Fareham director of rugby Jamie Daly.
‘But all credit to Bognor because their defence was fantastic.
‘We were in their 22 in the second half and we must have got eight or nine penalties in a row, invariably for the same or similar offences.
‘After the referee showed three yellow cards in the first half, we couldn’t understand why there wasn’t there one shown during that spell.
‘Their first try stemmed from a mistake in defence but Bognor constructed their other tries well, pinning us back with good kicks.
‘Our pack was a bit disjointed because of all the changes for one reason or another.
‘Bognor played well and in the first half they put us under an enormous amount of pressure and that won them the game.
‘We were a lot better in the second half and we obviously picked ourselves up and came back into it.
‘But we were beaten – it wasn’t that we gave the game away.
‘We just have to take that on the chin and move on.’
In London south west three, Petersfield suffered a heavy 39-10 defeat at Sandown & Shanklin.
United Services Portsmouth eased their way to a 48-0 win over bottom club Fareham Heathens in Hampshire League division one at Burnaby Road.
Portsmouth Vets edged to a 19-17 win over their Petersfield counterparts at Rugby Camp.