Brian O'Driscoll
Former Ireland captain on TNT Sport

Another loose pass as O'Brien held that just a little too long and forced the pass. There is no lack of effort but it has been a frustrating afternoon at times for Ireland with ball in hand.

Yoshitaka Yazaki is rapid! He's made 30 metres and Japan are now into the Irish 22!

Ian Humphreys
Former Ulster fly-half Ian Humphreys on BBC Radio Ulster

This has been the story of Ireland's day, the last pass hasn't been accurate enough.

It's been an afternoon of 'so close' for Tommy O'Brien, who does really well to beat his man but there's too much on his offload to Stockdale and it's into touch.

Caolin Blade is on for Craig Casey at scrum-half.

There's a lot of sideways passing from Ireland but not a lot of going forward.

We've only 20 minutes left in Dublin.

As poor as this game has been as a spectacle, it has fairly rattled by.

It's huge defence from Japan, who got bodies under a maul that had formed and they win the scrum on their own five-metre line.

Ireland win the throw and are hammering at the door.

Rory Best
Former Ireland captain on TNT Sport

Jack Conan and the two Prendergasts have been really impressive since coming on and have brought plenty of energy. Ireland's strength in depth on show

Gus McCarthy and Finlay Bealham are on for Thomas Clarkson and Ronan Kelleher.

Play is brought back for the penalty from the scrum and Sam Prendergast sends it deep into the 22.

Jacob Stockdale shows some nice feet and Cian Prendergast makes more metres with a big carry.

It's kicked across to Tommy O'Brien but he can't gather and it spills forward.

Japan are throwing the ball about again but a sloppy pass means any chance of an attack slips away.

Cian Prendergast was offside and he was the one who charged down the clearing kick.

So the try is ruled out.

It was a kick through by Tommy O'Brien and there's a bit of a mess which allows Jacob Stockdale to pounce on the loose ball to score.

But we're looking to see if the Ulster wing, or Cian Prendergast, were offside.

Ireland can clear and there's some more kick tennis between the sides.

Sam Prendergast is crunched by two Japan forwards in his first action since coming on.

Japan have the penalty and pop it into the corner.

The maul can't get rolling and any momentum is stalled.

Matt Gault
BBC Sport NI senior journalist at Aviva Stadium

Nice moment for the Prendergast family as brothers Cian and Sam run on to the field together.