LYN Jones has lauded Newport Gwent Dragons' history-making win against Leinster – but has warned their hot form won't matter a jot at Murrayfield in their European semi-final.

The Dragons will travel to Edinburgh for Friday's Challenge Cup clash in fine fettle after a stupendous comeback win against the Guinness Pro12 champions at Rodney Parade.

They trailed Leinster 22-8 with half an hour remaining but came storming back for a bonus point win – and a first ever league double over the Irish province – thanks to centre Jack Dixon and flanker James Benjamin (2) adding to hooker Rhys Thomas' first-half try.

It means that they head to Scotland on the back of four wins while Edinburgh were thrashed 34-3 at home by Munster.

Jones, however, has stressed that the Dragons are keeping their feet on the ground.

"What a win but I've been in rugby a long time and had big wins one week and a good kick up the bum the following week," said the director of rugby.

"Edinburgh's stuffing against Munster and us winning against Leinster has no reflection at all on Friday. We know that we have to freshen up and come with our A game.

"We are playing for about 30 to 40 minutes at the moment and doing well but the minute that we put 50-minute performances in we are going to be really good."

The Dragons had to dig deep for victory against a Leinster side who head to Toulon in the Champions Cup with their Pro12 playoff hopes hanging by a thread.

Jones said: "We knew this was going to be so tough and that Leinster would come hard at us. They came here to win and score four tries as well.

"They played very well in the first half but knew that their territory and possession wouldn't last, that it would come back our way and that we would have our chances.

"We worked hard, fought hard and deserved the win. We are getting the basics right and know where we need to improve and where we are going.

"You just can't believe the age of the boys in the changing room. They are so young and are making mistakes in games but that's just inexperience and we have got to give them time to grow."

The Dragons will monitor injuries suffered by lock Cory Hill (head) and flanker Nick Crosswell (back) while centre Pat Leach, whose defensive strength was missed, was withdrawn late on with a knee problem.