Cardiff can do Newport a good turn by defeating Llanelli at the Arms Park on Friday and leaving Newport with a title chance if they in turn beat Bridgend on Saturday.
If Cardiff win and Newport lose, it would be Cardiff's title, but if Llanelli win on Friday, they will be the champions.
The three clubs, plus current leaders Neath, have already secured places in next season's Heineken Cup, with the fifth place going to Swansea or Pontypridd - the latter gaining the place if they defeat Sale Sharks and win the Parker Pen Shield on May 26 at Oxford.
The current Welsh/Scottish League table for the top seven clubs is: -
A pioneering strength and conditioning programme has been delivered to more than 8000 boys and girls at hub schools throughout Wales this season, helping to develop stronger, more flexible athletes for rugby and other sports.
The Singha Premiership Rugby 7s Series returns to the BT Sport Cardiff Arms Park on July 22nd when all four Welsh regions go head to head. Scarlets skills coach Dai Flanagan and Blues Elite Performance Pathway Manager Richard Hodges along with current Welsh squad members were at the launch of this season's event
GB7s women left their England base to train in Wales this week. Olympic Games hopeful Rachael Burford gives WRU TV's Graeme Gillespie her thoughts on Welsh teammate Jasmine Joyce - a 'one touch wonder'
The GB7s women's squad is currently training at Wales' Centre of Excellence where assistant coach Richie Pugh tells WRU TV's Graeme Gillespie some 'tough calls' will have to be made when it comes to finalising the 12 spots for Rio's Olympic Games.