Portsmouth coach Ben Dudley has warned his team against any complacency as they host Basingstoke in London two south west at Rugby Camp.
The Norway Road club made it three wins in succession by surprising league leaders London Cornish last weekend.
It was a terrific result against the top team in the division.
And now they face their Hampshire neighbours, who are propping up the rest of the league.
‘It is vital we keep our feet planted firmly on the ground,’ said Portsmouth coach Dudley.
‘Picking up three consecutive wins is great and we can take a lot of confidence from that.
‘Basingstoke have not been having a great time.
‘But we can’t afford to allow ourselves to be distracted by that.’
Portsmouth field the same pack of forwards that did so well in the last game.
Dudley is forced to make a number of changes in the three-quarters, though.
The player-coach moves to outside-half because Andy Barnes is not available.
Mark Ovens is drafted in to replace Luke Simmons on the wing.
And Danny Harris will start in the centre.
United Services are looking to secure a league and cup double over Camberley in London three south west at Burnaby Road.
Services knocked Camberley out of the RFU Intermediate Cup earlier in the season.
But since then the visitors have gone from strength to strength.
They are sitting pretty at the top of the table and are sure to be out to exact revenge for their cup defeat at the hands of United Services.
‘Camberley are not top of the league for nothing, so we will have to be at our best,’ said Services director of rugby Matt Davis.
‘It is important that we get back to winning games as soon as possible.
‘At New Milton last week we conceded two late tries to end up drawing 29-29 and that was disappointing.
‘We need to display a bit more control and learn that once you get into a good position you don’t always have to keep chasing more points.
‘Our fitness is good enough and it is more about management and closing games out.’
Services have an injury doubt over winger Luke Peters, who has an ankle problem.’
In Hampshire two, Southsea Nomads visit fourth-placed Overton.