Blues North and South will be looking to stay on course for a place in the final of the WRU Age Grade Championship tomorrow (Tuesday 25 November) when they take on the Dragons and the Ospreys.
The North have lost their last two games, but are still in with a good chance of qualifying whilst the South's defeat of the North last time out, has kept them in the hunt too.
The South entertain a Dragons side who went down to North Wales last week, but who will provide stern opposition at Taffs Well. Tries from Matt Roberts and JB Bruziller earned the South a 21-6 victory over the Dragons two months ago with Rhys Patchell helping himself to 11 points.
Meanwhile the Ospreys, who were 22-14 winners over the Dragons in their last game, will be no pushovers for a North side who were 46-27 winners when the sides met earlier in the season.
Victory for the home side is a must if they are to keep alive their feint hopes of reaching the final, whilst for the North, a sixth victory of the season would put them in with a wonderful chance of another final appearance.
On Wednesday, it's the turn of the under 18s with the Dragons taking on the Ospreys at Newbridge.
Cardiff Blues u-16 South: C Allen; H Robinson, C Driscoll, J Morris, M Roberts; R Patchell, T O'Brien; R Rowley, P Lloyd, A Rees, E Chilcott, I Matthews, S Vial, L O'Brien, R Tucker (capt). Replacements: J Hopkins, C Hole, B Smith, J Delf, R Phillips, JB Bruzillier, P King
Tuesday - Under 16
Blues South v Dragons (Taffs Well 7.15)
Ospreys v Blues North (Llandarcy 7.15)
Wednesday - Under 18
Dragons v Ospreys (Newbridge 7.15)
Judgement Day IV is nearly upon us. The showpiece event, held for the fourth year running at the Principality Stadium, will see Cardiff Blues facing Ospreys, followed by the clash between Scarlets and the Dragons.
For the past two seasons you may have noticed an artist in the crowd and drawings appearing on twitter and TV. These collections of drawings were all produced from life, on the spot without the use of a camera in order to capture the vibrancy, emotion and atmosphere of the moment.
Join Cardiff Blues for Wales' home matches in the 6 Nations with our fantastic hospitality packages at BT Sport Cardiff Arms Park - but act quickly to take your place with our Scotland packages now SOLD OUT!