Donegal v Louth: All-Ireland SFC quarter-final at Croke Park

Seán Mac Cumhaills man Oisín Gallen sends another score through the posts. 

Meanwhile, Louth's Conor Grimes has had a point ruled out by Hawk-Eye. 

Peadar Mogan kicks high and over from out the field but Louth hit back through the ever-reliable Tommy Durnin. 

Ger Brennan has made a triple substitution to add some energy to his team and one of those changes, Liam Jackson, shoots over to leave them four points down. 

Donegal string a series of passes together and open the pitch up for substitute Aaron Doherty to get his name on the scoresheet. 

Michael Langan finds himself in space and the St Michael's clubman points from distance to put four between the teams. 

A bright start to the second half from Donegal as Conor O'Donnell is picked out and he finishes clinically. 

However, Louth respond immediately with Ryan Burns slotting the ball between the posts. 

They have returned for the second 35 minutes, which is underway. 

Highlights from the first half are available here: 

Donegal 0-11 Louth 0-8Referee Joe McQuillan calls time on the first half and Jim McGuinness' men head in with a three-point advantage. 

Opposite number Ger Brennan has been active giving instructions on the sideline and he may look to tweak things at the break. 

It's end-to-end as Bevan Duffy's effort is blocked and Donegal take the opportunity to break in numbers. 

Gallen curls the ball over and they are up by three. 

Donegal attack down the right and Peadar Mogan fists over his second point.

There will be five additional minutes to be played following that stoppage due to the head injuries to Mulroy and McKeever.