Pooler have been on fire this season, and would love to take the scalp of the current Welsh Champions with all the off field issues in the game at the moment.
And Scarlets coach Gareth Jenkins is set to announce a full strength side for the match. He will, course be without the services of Wales outside-half Stephen Jones who broke his hand in the Welsh Premiership match against Cardiff last Tuesday.
"We can't afford to do is to select anything other than a strong side,' Jenkins told BBC Online.
And Jenkins knows that the power of the Principality Cup can throw up unexpected results, and with fervent home support on Saturday, he expects a heated encounter.
"To go to Pontypool Park to play in a Cup game is a difficult place to be exposed to.
"Pontypool Park has always been a great place to go to play rugby - it's always been a place of marvellous atmosphere."