Fine Inisi and Harrison Keddie score first half tries for Welsh region
Dragons duo David Richards and try-scorer Inisi are both sin-binned
Jacopo Trulla and Giulio Bertaccini both touch down for Italians in tight opening half
Keddie scores his second try to put Dragons in control
Replacement hooker Elliot Dee scores away side's fourth try
Angus O'Brien kicks 15 points for Dragons
Late Leonard Krumov and Giovanni tries not enough for late Zebre comeback
Dragons will face Montpellier in the semi-finals in early May
The final will be held at Bilbao's San Mames Stadium on Friday, 22 May
Zebre 10-10 Dragons
Aneurin Owen is off for a HIA here after carrying into contact - but Mr Pearce has ruled the clash of heads was accidental and there was little the defender could do.
The Dragons medical staff look, well, less than ecstatic with that interpretation.
Image source, Huw Evans Picture AgencyZebre 10-10 Dragons
Gwyn Jones
Former Wales captain on S4C
After a professional and disciplined start, Zebre are now back level and Dragons are short a man having looked comfortable.
Zebre 10-10 Dragons
Richie Rees
Former Cardiff and Wales scrum-half on BBC Radio Wales
That Zebre try has all come from a lack of discipline and accuracy from Dragons in the past five minutes.
Trulla try, Da Re con
This contest has turned in a flash.
From the yellow card, Giacomo Da Re goes for the corner and again it is that man Jacopo Trulla who comes into the line and cuts over near the posts.
From leading by seven, the Dragons are pegged back level and still have eight minutes to go with 14 men.
Zebre 3-10 Dragons
David Richards had to go there.
Jacopo Trulla latches onto a cross-field kick from Giacomo Da Re and then chips ahead himself - only for Richards to haul him down late.
Little option for referee Luke Pearce.
Zebre 3-10 Dragons
Superb defence from Dragons.
A burst from Jacopo Trulla again has them scrambling in their own 22 but the defence reorganises and they withstand some heavy pressure.
Eventually, the hosts run out of ideas and Matteo Canali is pinged for running into his own man.
Zebre 3-10 Dragons
Gwyn Jones
Former Wales captain on S4C
That kick can be very effective sometimes!
Inise try, O'Brien con
Aneurin Owen chips ahead and Fine Inisi pounces!
Owen was only 15 metres out but spotted a gap behind the Zebre defence. The kick was an awkward one and sure enough, it bounces away from the covering defender and Inisi is able to get a hand down on the ball over the line.
Looked messy, but who cares? Angus O'Brien adds the simple extras.
Image source, Huw Evans Picture AgencyDa Re
You can tell this is cup rugby - neither side is turning down three points when they're on offer early on.
This time it's Zebre's chance after Aaron Wainwright is caught offside in midfield and from a similar range to Angus O'Brien just moments before, Giacomo Da Re nails it.
As you were.
Zebre 0-3 Dragons
Richie Rees
Former Cardiff and Wales scrum-half on BBC Radio Wales
Dragons have been positive all season in going for the corner but have chosen to go for three points.
It is a European quarter-final and was the right decision.
These last three minutes have to be the blueprint for the Dragons for the rest of the game.
O'Brien
No mistake from the full-back!
He struck that straight and true and that should settle the visitors down.
Image source, Huw Evans Picture AgencyZebre 0-0 Dragons
Finally, it's Dragons on the attack.
A strong carry from Aaron Wainwright sees the number eight break two tackles and leads to a penalty chance - and Angus O'Brien immediately steps up to go for the posts.
He's right of centre, about 35 metres out...
Image source, Huw Evans Picture AgencyZebre 0-0 Dragons
Gwyn Jones
Former Wales captain on S4C
More good play from Zebre, but Dragons have sufficient numbers there to deal with it again.
The pressure has been on the Dragons early on though.
Zebre 0-0 Dragons
It's still scoreless but boy, this is an edgy start for the Welsh side.
Jacopo Trulla speeds down the left wing and his pass inside looks destined to be a scoring one - only for a retreating Fine Inisi to make a crucial interception.
Dragons need some possession and territory here.
Zebre 0-0 Dragons
Rhys Priestland
Wales international fly-half on S4C
The two teams have done incredibly well to reach this stage.
Every time I look at the Dragons, they look like a team that has improved.
I'm confident they can go through tonight because they have the talent and the structure.
Zebre 0-0 Dragons
The first defensive test for Dragons and they pass it!
Giacomo Da Re boots a penalty to the corner and after a line-out drive and several phases close to the line, Zebre are penalised for crossing in midfield.
And breathe.
Zebre 0-0 Dragons
Image source, Huw Evans Picture AgencySo, Giacomo Da Re gets us going in Parma and a huge night in the history of Dragons is underway.
No messing around from Tinus de Beer there. He receives the kick-off and promptly clears his lines.
Zebre v Dragons (20:00 BST)
Richie Rees
Former Cardiff and Wales scrum-half on BBC Radio Wales
If you are looking for an opponent in the quarter-final, you could not have asked for a better opponent than Zebre.
It is a huge opportunity.
Zebre v Dragons (20:00 BST)
Two of the four Challenge Cup quarter-finals have already been played.
Ulster beat La Rochelle 41-24 last night, and Montpellier booked their place in the semi-finals with a 45-22 victory over Connacht this afternoon.
The other last eight encounter away from our feature game tonight sees Benetton host Exeter Chiefs at Stadio Monigo on Sunday.
Zebre v Dragons (20:00 BST)
Image source, Huw Evans Picture AgencyAmid a period where Welsh rugby has been plagued by fall-outs and division, it was heartening to hear Filo Tiatia reveal Dragons have has the backing of their rivals this week.
"It's pleasing to get messages from Steve Tandy, Jockey (Matt Sherratt) and Danny [Wilson], so they're pleased around all four regions trying to be better in competitions," said Tiatia.
"We have had messages from the other coaches from the regions, so we're well connected and that's what we need."
The New Zealander also promised his players will be prepared for battle tonight, but warned of any complacency against the only side below them in the URC.
"The players are focused on going to Parma and have a scrap," he added.
"They're a good side, especially at home. I played in Italy and understand how they think, but also when you go up against the challenge, they're up for it. So it's got to be a tough game playing over there but the boys are excited."
