London Wasps have finished their Challenge Cup Pool 3 campaign with a narrow 20-19 win at Newport Gwent Dragons.
Despite the triumph, Dai Young's side have yet to discover whether they have earned themselves a home quarter-final in the competition.
An early penalty from former Wasps full-back Tom Prydie put the hosts ahead before Nick Robinson levelled the scores in the 21st minute.
Daniel Evans then touched down for Newport, with Prydie adding the extras to give his side a 10-3 advantage.
A second Robinson penalty cut the deficit and Wasps went ahead for the first time in the match in the 36th minute when the 31-year-old added the extras to a penalty try.
However, the Dragons had the final say of the first half courtesy of another Prydie kick.
Wasps stretched their lead to 20-16 just before the hour when Robinson converted his own try.
Steffan Jones came off the bench to kick the home side to within a point of their opponents with five minutes left to play, but they were unable to find another score to snatch the victory.