Dublin make this attack count.

Colm Basquel finds space inside the arc and confidently splits the posts to extend the Dubs' lead to two after 19 minutes at Croke Park.

Niall Scully tries his luck from outside the arc once more, but his effort drifts wide.

Dublin continue to dominate Galway's kick-outs and are creating plenty of opportunities, but they may yet rue those missed chances from distance.

Niall Scully tries to respond immediately for Dublin, but his ambitious effort drifts wide to leave the Dubs with three wides.

They don't have to wait long to regain the lead, though.

Con O'Callaghan bursts through the middle before picking out Paddy Small, who calmly splits the posts to edge Dublin back in front.

Galway are back on level terms.

After a patient spell of possession, Robert Finnerty lets fly from the right edge of the arc and lands a superb two-pointer — Galway's first of the afternoon.

It's all square again with 13 minutes played at Croke Park.

Image source, Getty Images

Galway respond through another well-worked move.

Cillian McDaid flicks a clever fist pass into the path of Finnian Ó Laoi, who calmly slots over to cut Dublin's lead.

Dublin have suddenly burst into life.

Paddy Small curls over a superb two-pointer from the edge of the arc to put the Dubs in front for the first time this afternoon.

Galway are still reeling when Con O'Callaghan pounces again moments later, extending Dublin's advantage to three with his second score in quick succession.

Dublin hit back immediately from their resulting kick-out.

Con O'Callaghan opens his account for the afternoon, finishing a swift attack to bring the sides level once again after six minutes.

Galway carve Dublin open with a slick passing move.

Late replacement Finnian Ó Laoi bursts into space before laying the ball back to Céin D'Arcy, who calmly splits the posts to restore the Tribesmen's lead.

A brilliantly worked score from Pádraic Joyce's side.

Cormac Costello looks to keep the pressure on, but this time his effort drifts wide of the posts.

It's the first wide of the afternoon for either side.

Dublin respond immediately.

Cormac Costello opens his account with a well-taken point from open play to bring the sides level in the early stages.

Galway settle quickly after winning the throw-in and enjoying an extended spell of early possession.

The move ends with Céin D'Arcy winning a free after being pulled back, and Robert Finnerty makes no mistake from the placed ball.

The Tribesmen open the scoring after two minutes at Croke Park.

Meath referee David Gough gets us under way as Dublin and Galway battle for the final place in the All-Ireland semi-finals at Croke Park.

Who will join Louth, Kerry and Mayo in the last four?

No rest here at Croke Park as we prepare for the weekend's final All-Ireland quarter-final, with Dublin and Galway set to battle for the last remaining place in the semi-finals.

The Dubs arrive after edging Donegal in an extra-time thriller last weekend, while Galway have enjoyed a fortnight to prepare after advancing directly from Round 2.

With Kerry, Mayo and Louth already safely through, just one semi-final berth remains up for grabs.

Stay with us for all the live updates and reaction from Croke Park in this final quarter-final encounter.

Ger Brennan has made one change to the Dublin side that defeated Donegal after extra time in Round 3, with Eoin Kennedy replacing the injured Nathan Doran in the only alteration to the starting XV.

Galway have made three changes in total to the side that overcame Westmeath.

Shane McGrath was initially named in place of Fionn McDonagh, but two late switches see Kieran Molloy and Finnian Ó Laoi replace Seán Kelly and Shane McGrath respectively.

In a mark of respect for the late Paul Clancy, who passed away on Monday, Céin D'Arcy will wear the number 22 jersey rather than the number 10 shirt proudly worn by Clancy during his Galway career.

Dublin: Evan Comerford; Seán MacMahon, Eoin Kennedy, David Byrne; Lee Gannon, Theo Clancy, Charlie McMorrow; Peadar Ó Cofaigh Byrne, Brian Howard; Colm Basquel, Con O'Callaghan, Niall Scully; Paddy Small, Ciarán Kilkenny, Cormac Costello.

Subs: Hugh O'Sullivan, Tom Lahiff, Liam Smith, Greg McEneaney, Cian Murphy, Seán Guiden, Josh Bannon, Ross McGarry, Alex Gavin, Seán Bugler, Tim Deering.

Galway: Connor Gleeson; Jack Glynn, Cian Hernon, Liam Silke; Dylan McHugh, John Daly, Kieran Molloy; Paul Conroy, John Maher; Céin D'Arcy, Finnian Ó Laoi, Cillian McDaid; Robert Finnerty, Matthew Tierney, Shane Walsh.

Subs: Conor Flaherty, Brian Cogger, Sean Mulkerrin, Johnny McGrath, Seán Kelly, Shane McGrath, Fionn McDonagh, Daniel O'Flaherty, Jack Mullen, Damien Comer, Liam Ó Conghaile.

Image source, BBC Sport

Louth captain Sam Mulroy believes Sean Callaghan's early red card actually inspired the Wee County as they battled to a famous victory over Monaghan with 14 men.

Louth Captain Sam Mulroy speaking to RTE on the early red card:

"It probably galvanised us if anything,"

"We got a bit more compact. Everyone was working that bit harder because we knew we had to. We defended brilliantly and were clinical when the chances came."

Mulroy also praised the belief within Gavin Devlin's squad after Louth reached their first All-Ireland semi-final since 1957.

"We've believed in ourselves all year. We've a brilliant group, and we'll enjoy this before looking forward to the next challenge."

Man of the Match, Dara McDonnell speaking to RTE:

We just kept going and going. We didn't want to throw in the towel like we maybe did before. We stayed compact, kept hammering away and never gave them a chance to punish us."

"We've been working on this since October. The speed, agility and mobility - that's all down to the coaching."

"[Gavin Devlin] kept saying, 'Why not us?' We got tired of hearing it, but he was right."

Speaking on the impact of Louth's substitutes:

"Tadhg, Tommy, all of them - they made a massive difference when they came on."

Ryan Burns lands a crucial insurance point to stretch Louth's lead to three in the closing moments.

Monaghan launch one final attack in search of a lifeline, but the Wee County defence stands firm to see out a remarkable victory.

Against all the odds, having played with 14 men since Sean Callaghan's sixth-minute red card, Louth have booked their place in the All-Ireland semi-finals with a famous win at Croke Park.

Louth have all the momentum now.

Ciaran Byrne follows up his equaliser with another superb point to extend the Wee County's lead to two.

Time is running out for Monaghan, while the 14 men of Louth edge ever closer to a famous All-Ireland semi-final.

What a response from Louth!

Tadhg McDonnell is on target once again to draw the Wee County level, and they are not finished there.

Dara McDonnell wins the resulting kick-out before Ciaran Byrne is picked out in space, and he makes no mistake to fire Louth back in front with just three minutes remaining.

Incredible drama at Croke Park.

The lead changes hands once again.

Louth's celebrations are short-lived as Conor McCarthy responds almost immediately, splitting the posts to edge Monaghan back in front.

More changes for both sides as the closing stages approach.

Robbie Hanratty replaces Dessie Ward for Monaghan, while Ciaran Keenan comes on in place of James Maguire for Louth.