Northampton dominated the set-peices in the first half, putting the Dragons under immense pressure, this providing Saints some good ball to keep the scoreboard ticking. Dragons had no reply to the 21 points of the Saints.

Saints attack but the pass to Taqele Naiyaravoro is judged to be forward. That ends the half.

Penalty for Saints at the scrum. Piers Francis sends the ball to touch for Saints to set up a halfway lineout.

Saints lose the ball forward. Scrum Dragons.

Dragons are down to 13 men as Adam Warren was sent off straight after that penalty try.

Williams sends it far wide though and Naiyaravoro is there. Biggar clears and Dragons have the lineout back near halfway.

David Ribbans charges forwards from the restart before Dan Biggar sends the high ball up.Taqele Naiyaravoro is in chase but Dragons earn the penalty as Taqele deemed to have pushed his opposite man off the ball. Dragons point to the posts.

Penalty try awarded by referee Mathieu Raynal for the repeated infringements as the Saints collect another 7-pointer.

Too many penalties at the lineout as Lewis Evans gets his marching orders to spend the next 10min on the sideline.

Penalty Saints! Dragons forwards can't handle the pressure. Bigger sends the ball to the corner.