Glasgow pin Ulster back with a kick for territory and Ulster lose their own lineout.

The visitors once more launch a series of carries deep in Ulster's half.

Another scrum-penalty conceded by Ulster.

Glasgow kick for touch, win their lineout and are now patiently going through the phases as they work their way into Ulster's half.

Ulster have the ball in midfield and a series of carries fails to gain much ground.

A knock-on from Stewart Moore gives Glasgow the scrum just inside their own half.

Ulster struggling to gain traction in attack.

Rory Darge's try is disallowed after a review spots a forward pass in the build-up.

Ulster off the hook for the time being, but under relentless pressure from the visitors.

Changes in the front row for Ulster as Tom O'Toole and Andy Warwick come on for Corrie Barrett and Eric O'Sullivan.

Ulster off the hook after some miscommunication from Glasgow in the lineout.

The hosts have a scum just inside their own half but they concede another penalty.

Ulster start the second half with intent but struggle to get much change out of the Glasgow defence.

Ulster feel the squeeze in the scrum and Glasgow win a penalty which they kick for touch.

We're back here in Belfast after the break and Ulster kick into the Glasgow half.

Jonathan Bradley
BBC Sport NI

Hugely important for Ulster to repel those late mauls and stay within two points of Glasgow at the turn.

At 12-10, the hosts will perhaps feel the score could be worse for them at half-time.

The champions have looked sharp when moving the ball but it's Ulster penalties that are giving them the access - seven of them in that opening 40 minutes alone will be far too many from Richie Murphy's perspective.

Tony McWhirter
1999 Ulster European Cup winner on BBC Sounds

Ulster will be happy just to be two points down - Glasgow have dominated larges parts of the match while Ulster's error count has been high.

Words of wisdom from Richie Murphy at half-time will be needed

An exciting first half of rugby in Belfast, with the game on a knife-edge at the break.

Aidan Morgan's try on his competitive debut has kept his side in the game, but the visitors have dominated much of the first half in terms of territory and possession.

An exciting second half is in store!

David McCann manages to steal the ball from the lineout maul and a relieved Nathan Doak kicks the ball into touch as the sides go in for the break.

Mike Lowry with another good defensive read, snatching the ball with a well-time interception.

Glasgow win the ball back and win a penalty with the clock in the red.

The visitors point to the corner as they seek to end the half with another try.

Glasgow prop Sam Talakai knocks the ball on in midfield and Ulster get the scrum on the halfway line.

A strong push from Glasgow, but Ulster salvage the ball.

Mike Lowry and Ethan McIlroy carry, but Glasgow turn the ball over and Ulster are once again trying to get out of their half.

Glasgow try to use their maul once again, but Ulster manage to successfully resist the drive.

Ulster now have the chance to clear their lines.

Ulster are feeling pressure at the scrum and Glasgow kick from the resulting penalty.

Another powerful maul from Glasgow gives them a good attacking platform, with Ulster struggling to cope with the drive.

The game remains on a knife-edge as we approach the half-hour mark.

Ulster end a spell of Glasgow possession and earn a penalty.

Aidan Morgan kicks for territory and they win their lineout on the halfway line.