REEBOK REGIONAL PREVIEW U20
Both sides have won three of their four games to date and further wins against the Blues and Dragons respectively will put them through to the final.
The Scarlets take on the Blues at Narberth whilst the Ospreys travel to Abertillery to take on the Dragons, who are third in the table with one win from their three games including an outstanding victory, at Abertillery Park, against the Blues.
The Ospreys won the fixture between the two sides earlier in the season, 22-13, but with home advantage in their favour this time, the Dragons will fancy their chances of putting the record straight and closing the gap on the leading pair.