Spilled forward for a Quins scrum feed

Out to Lowe on the left

Leinster keep it tight from the lineout

Box kick from Porter away to touch

Prendergast gets the match underway for Leinster

Leinster host Harlequins in the round of 16 of the Champions Cup. Leinster won all four of their group matches to top pool 2, while Harlequins recorded two victories to end fourth in pool 4. Leinster are four times winners of the competition and have won 25 of their last 28 completed champions cup matches, with their only three defeats in that period coming in the last three finals.

Who is the ref?