Newport Gwent Dragons secured progression to the European Challenge Cup semi-finals with a shock 23-21 victory over Gloucester at Kingsholm.
Including last year's final win against Edinburgh, Gloucester went into this last-eight encounter unbeaten in 15 European fixtures, although their league form has taken a turn for the worse in recent weeks.
The Dragons are on a similarly poor run domestically and this week's announcement that the region would be put up for sale served as a further distraction from their European campaign.
But it was Lyn Jones' men who opened the scoring in the absence of their unwell coach via the boot of Dorian Jones, before Ben Morgan touched down for the hosts.
Jones added three more penalties to send the Dragons in with a 12-11 lead at the break and that advantage stretched to 18-11 in the early stages of the second period.
Steve McColl's try, converted by Greig Laidlaw, helped Gloucester move 21-18 in front, but Charlie Davies touched down from close range late on to secure a memorable victory, which secures a semi-final clash with Montpellier.