Narberth's 22-15 win over UWIC saw the Otters edge towards the Swalec Division One West title but they may be left to rue the failure to secure a bonus-point.
But their failure to do so leaves an opportunity for TATA Steel to snatch the league lead when they take on the same opponents on Wednesday.
Narberth recorded three tries in their win, through winger Matthew Davies, prop Tom Slater and replacement winger Nick Jones. Jon Campbell and Andy Berry crossed for the Students, who remain mired in mid table.
If TATA secure a try-scoring bonus point and win by six points in midweek they will overtake Narberth by virtue of points scored, and they warmed up in style with a 45-11 over Llanharan.
Centre Gbemi Fisher, full back Cameron Clement and outside half Simon Evans all crossed for braces, with number eight Cameron Davies also scoring.
Clement added five conversions to finish with a final tally of 20 points.
Meanwhile Tondu secured a priceless win in the battle to avoid the drop as they earned a 27-20 over visiting Waunarlwydd at Pandy Park.
Tries from Dan Thomas, Matthew Davies and Steve Brown gave the Waterwheelers a 27-6 halftime lead, and, despite a fightback from the visitors, it was enough to climb up two places to tenth.
Ammanford take their place at the foot of the table after succumbing 44-7 to a rampant Bridgend Athletic side at Newbridge Fields.
James Olds, Lyndsey McCausland and Jonathan Phillips crossed for first-half tries, and Phillips converted all three and added three penalties to give the hosts a 30-0 interval lead.
Rhys Ward Jones and Michael Hathaway touched down after the break as Athletic condemned the Recreation Ground outfit to a 10th straight loss.
Bonymaen's situation also looks perilous, but they did at least pick up what could be a crucial bonus point in a 31-28 loss at Llangennech.
The Welsh Rugby Union has announced a major new sponsorship deal with Gullivers Sports Travel which will make the UK's leading, and longest established, multi-sport tour operator, an Official Supplier for the rest of the decade.
Having taken part in seven World Cups as a player and coach, Liza Burgess hopes to go out in style this afternoon when Wales take on Australia in the Play-off for seventh and eighth place in the Women's Rugby World Cup in Paris.
WRU Head of Rugby Josh Lewsey met with volunteers across the game earlier this week, championing their role in the sport. He was joined by Wales captain Sam Warburton for part of the day as volunteers took part in a 'Try Out' event for the 2015 Rugby World Cup
Wales Women may not have got the results they wanted recently on the field, but off it they have made massive strides in strength and conditioning - and that is in no small part due to S&C coach Sam Dodge.
Two weeks into the new pitch project at Millennium Stadium, Groundman Craig Campbell takes staff on a unique behind-the-scene tour of the works so far and National Squad Assistant Strength and Conditioning Coach John Ashby and Tour Guide Peter Owen describe what the revamp means for them.
Try-scorer Jenny Davies and fellow prop Megan York reveal to WRU TV's Graeme Gillespie their thoughts after Wales broke their drought in the Women's Rugby World Cup with a 35-3 win over South Africa in Paris.