Gosport & Fareham opened up a three-point lead at the top of London two south west with an 18-15 win over closest rivals Guildford.
It was a crucial contest and the hosts held their nerve at Gosport Park.
But coach Scott Ashley has warned his players against any complacency.
He knows the title is far from in the bag.
‘All we have done is give ourselves a slight advantage,’ said Ashley.
‘If we believe we have cracked it because of this win then we could easily fall flat on our faces.
‘We have some tough games in the next few weeks and still have to go to Guildford towards the end of the season.
‘All of us know we still need to step up another gear.
‘Anyone who thinks it is all over after this win is a fool.’
With both teams starting the game level on points the importance of the occasion seemed to get to the players.
The result was a messy game and not the spectacle predicted beforehand.
Guildford were quicker out of the traps but they did not manage to breach the home defence.
Instead it was the home side who forged into a 12-0 lead.
Tries from Tom Lewis and Sam Foster – and a Loz Wadham conversion put them briefly in charge.
Guildford reacted to level the scores with two tries and a conversion of their own.
But Wadham gave his side a 15-12 advantage at the break.
In a hard-fought second half, all either side could manage was a penalty each.
‘I felt we deserved the win but it was a case of which side made the fewer mistakes,’ said Ashley.
‘Some of the decisions from the official frustrated both teams.
‘The game never really ignited and we didn’t play to our true potential.
‘Guildford felt exactly the same.’
In Hampshire one, Fareham Heathens followed up their terrific win over leaders Petersfield with a thumping 72-0 success at Alresford.
Petersfield bounced back to winning ways by demolishing basement side Stoneham 113-7 at Penns Place.
Southsea Nomads slipped to a 25-19 defeat in their clash at Fawley.