20 matches will take place across all four provinces
Sunday afternoon sees 20 county finals, including two replays take place around the country in both football and hurling.
In hurling, Clare, Galway, Tipperary and Wexford all have their flagship matches. In Clare, Clonlara will be looking for their first win since 2008, after losing last year's final.
One of Sunday's most intriguing games takes place in Semple Stadium as Thurles Sarsfields look to win their fifth county title in seven years. They face underdogs Kildangan. The north Tipperary team are in their first final since 1938.
In football, Cork, Donegal, Kerry and Laois all have their county finals, while Cavan and Tyrone see replays, after two drawn games earlier this month.
Paddy McBrearty, Ryan McHugh and Mark McHugh are hoping to help Kilcar to their first Donegal title since 1993. They meet a Michael Murphy-led Glenswilly side.
The Laois final sees Portlaoise looking for their tenth county title in a row. AFL star Zach Tuohy has made his annual pilgrimage home and is expected to play in O'Moore Park against Stradbally.
Hurling County Finals
Carlow: Mount Leinster Rangers v St Mullins, Netwatch Cullen Park, 3.45pm
Clare: Ballyea v Clonlara, Cusack Park, 3.30pm
Galway: Gort v St Thomas, Pearse Stadium, 3.30pm
London: Robert Emmetts v St Gabriels, Greenford, 3pm
Roscommon: Four Roads v Oran, Athleague, 3.30pm
Tipperary: Kildangan v Thurles Sarsfields, Semple Stadium, 3.30pm
Wexford: Cloughbawn v Oulart-the Ballagh, Innovate Wexford Park, 3.30pm
Wicklow: Bray Emmetts v Carnew Emmetts, Aughrim, 3.15pm
Football County Finals
Antrim: Cargin v St Gall's, Corrigan Park, 3pm
Armagh: Cullyhanna v Maghery, Athletic Grounds, 4pm
Cavan (Replay): Castlerahan v Ramor United, Kingspan Breffni Park, 4pm
Cork: Ballincollig v Carberry Rangers, Pairc Ui Rinn, 3.45pm
Derry: Loup v Slaughtneil, Celtic Park, 3.45pm
Donegal: Glenswilly v Kilcar, MacCumhaill Park, 4pm
Kerry: Dr Crokes v Kenmare District, Fitzgerald Stadium, 3.30pm
Kildare: Moorefield v Sarsfields, Newbridge, 3.30pm
Laois: Portlaoise v Stradbally, O'Moore Park, 3.30pm
Longford: Abbeylara v Mullinalaghta, Glennon Brothers Pearse Park, 4pm
Offaly: Ferbane v Rhode, O'Connor Park, 3pm
Tyrone (Replay): Coalisland v Killyclogher, Healy Park, 3.30pm