However, standing in their way, will be the Blues South, fresh from last week’s victory over North Wales and desperate to keep alive their hopes of reaching the final.
The two sides have already met once this season, back in September, when the North scored three tries to one to win 20-5.
Jonathan Elley, Darren Harris and Jack Dando were on the mark that night with Harry Robinson scoring a consolation for the South.
North coaches Dale McIntosh and Lee Jarvis will be hoping to secure a second win over their rivals at Cardiff Arms Park, whilst making up for the 21-10 defeat at the hands of the Scarlets two weeks ago.
The Ospreys, who went down 41-15 to the Scarlets two months ago, will be on the lookout for revenge this evening when the sides meet in the reverse fixture, at Llandarcy.
Leading scorer Gethin Hunter, who has seven tries to date, will be keen to add to his tally, whilst Jordan Williams is on the lookout for another significant performance after kicking 11 points in the 21-10 victory over Blues North last time out.
Tomorrow night the Scarlets Under 18s entertain the Ospreys.
Scarlets Under 16: L Treharne; G Hunter, L Harvatt, M Jenkins, P Rushesha; J Williams, S Maynard; N Bowen, A Williams, S Lee, J Gardiner, D Evans, R Bloomfield (capt), O Powell, C Morris. Replacements: G Thomas, S O’Leary, D George, J Iles, R Evans, R James, G Rees.