A better scrum here from the Ospreys, but Aaron Wainwright wisely collects the ball at the back of the scrum and gets it out as quick as possible to avoid a penalty going against the Dragons.

Dane Blacker's clearance is a good one, and gets the Dragons up to half-way.

Chris Horsman
Former Wales prop on BBC Radio Wales

Ospreys will be disappointed with that.

It wasn't a clear run but Keelan Giles had an opportunity.

That was better from Ospreys - they look so much better with quick ball.

But that's another red-zone entry, as the coaches call it, and they have come away with no points.

Just as Ospreys looked to be building their best attacking move of the game, Keelan Giles knocks the ball on as the extra man over on the left wing.

It was not the best pass to be fair to Giles, but he would still be expecting to catch it.

Scrum for the Dragons.

Ospreys win a penalty on half-way after a high tackle by Taine Basham.

The TMO takes a quick look but informs referee Ben Breakspear that no further punishment is needed.

Ospreys kick to the corner once again.

Chris Horsman
Former Wales prop on BBC Radio Wales

As physical as the game has been, it's not really caught fire yet.

In boxing terms, both teams are just putting their jabs out there.

No mistake from Will Reed with the simple penalty, and the Dragons double their lead to six points.

Not the start the bonus-point-chasing Ospreys needed.

Ospreys had turned the ball over, but at the scrum the penalty goes against the hosts and Will Reed will have the chance to double Dragons' lead from right in front of the posts.

Another brief venture into the Ospreys half results in a penalty for the visitors.

This time two Ospreys defenders are penalised for not rolling away.

The Dragons opt to kick to the corner on this occasion, but the Ospreys turn the ball over and the chance goes begging.

Chris Horsman
Former Wales prop on BBC Radio Wales

Fantastic turnover for Dragons.

I have been really impressed so far with the Dragons forwards - there has been physicality and they have certainly been winning the gain-line contest.

Brilliant turnover from Elliot Dee, smothering Dewi Lake on the ground.

The Dragons are matching Ospreys' physicality despite but having much ball in hand.

This kick to the corner is a good one, and the Ospreys gather the resulting line-out.

Time to go through the phases with the forwards.

Brief stoppage in play here as Tom Botha receives some treatment, looks like a bash to the nose.

It will be a penalty for the hosts when we get back under way after the Dragons were penalised at the line-out for taking Justin Tipuric in the air.

Chris Horsman
Former Wales prop on BBC Radio Wales

It will be nice to see Keiran Williams gets some ball today.

He is someone who can put his hand up for Wales' summer tour.

The Dragons have seen very little of the ball in this opening 10 minutes or so, but they do have the lead.

Ospreys are gradually improving and moving in the right direction as far as the home crowd are concerned.

Chris Horsman
Former Wales prop on BBC Radio Wales

It's all a bit tentative at the moment.

No team is willing to grab the bull by the horns.

Now that was a brilliant kick from Dan Edwards.

It would have been a 50-22 if the ball had not been carried back into the Ospreys' half to begin with.

A defensive line-out to deal with for Dragons here though.

Gareth Griffiths
BBC Sport Wales at Swansea.com Stadium

All the talk is of the Ospreys winning with a bonus point but the Dragons are searching for a double over their Welsh rivals following the 20-5 win at Rodney Parade last November.

Dai Flanagan would love to guide his Gwent side to that accolade.

Ospreys win another penalty at the breakdown just over half-way, but Dan Edwards' kick does not make touch.

He will want that back.

Chris Horsman
Former Wales prop on BBC Radio Wales

That was a breathless opening spell. Honours were pretty much even.

Ospreys, you could see, had an intent to get to the wider channels, but the Dragons held firm and now they have opened the scoring, which is always nice away from home.

The kick is good from Will Reed, and the Dragons take an early lead.