The 2017 All-Ireland Senior Football Championship was the 131st edition of the GAA's premier inter-county Gaelic football tournament since its establishment in 1887.
Thirty-three teams took part â thirty-one of the thirty-two Counties of Ireland (Kilkenny, as in previous years, do not enter), London and New York.
Dublin won their third championship in a row, defeating Mayo in the final on 17 September 2017 by 1âÂÂ17 to 1âÂÂ16.
Connacht, Leinster, Munster and Ulster each organise a provincial championship. All teams who lose a match in their provincial championship (with the exception of New York) enter the All-Ireland qualifiers. All provincial matches are knock-out.
Twenty eight of the twenty nine teams beaten in the provincial championships enter the All-Ireland qualifiers, which are knockout. Sixteen of the seventeen teams (New York do not enter the qualifiers) eliminated before their provincial semi-finals play eight matches in round 1, with the winners of these games playing the eight beaten provincial semi-finalists in round 2. The eight winning teams from round 2 play-off against each other in round 3, with the four winning teams facing the four beaten provincial finalists in round 4 to complete the double-elimination format. Further details of the format are included with each qualifier round listed below.
The four provincial champions play the four winners of round 4 of the qualifiers in the quarter-finals. Two semi-finals and a final follow. All matches are knock-out. If a game ends in a draw it is replayed. If a replay ends in a draw, two ten minute periods of extra time are played each way. If extra time ends in a draw, the match is replayed for a third time.
On 1 January 2017 the 'mark' was introduced. It is defined as âÂÂ
When a player catches the ball cleanly from a kick-out without it touching the ground, on or past the 45 metre line nearest the kick out point, he shall be awarded a âÂÂmarkâ by the referee. The player awarded a âÂÂmarkâ shall have the options of (a) taking a free kick or (b) playing on immediately.
The four teams who won the quarter-finals in the previous year are given byes to this year's quarter-finals.
The two teams who won the semi-finals in the previous year are given byes to this year's semi-finals.
The Munster championship differed from the other provincial championships with regard to which teams were designated A or B in the qualifiers âÂÂ
An un-seeded draw determines the fixtures for all nine teams.
An A and B system for the qualifier draws was introduced in 2014 and was retained. The teams were designated as A or B depending on which half of their provincial championships they played in. Although some teams receive byes in the early provincial rounds, their position in the round in which they entered the competition was usually determined by the provincial draw, resulting in most teams being designated as A or B randomly. For example, each of the four provinces had two semi-finals â one between two teams designated A and one between two teams designated B â and the beaten semi-finalists in each province were always one A team and one B team.
In all qualifier rounds A teams played A teams and B teams played B teams. Usually the A teams played their provincial games before the B teams, which allowed the A qualifier games to be scheduled a week before the B qualifier games. The A and B system attempted to ensure that teams beaten in the provincial championships had a least two weeks before playing their subsequent qualifier match, though this was not always possible.
In the first round of the qualifiers sixteen of the seventeen teams beaten in the preliminary rounds or quarter-finals of the provincial championships competed. New York did not enter the qualifiers. Four A teams played four A teams and four B teams played four B teams. The round 1 draw was unrestricted â if two teams had played each other in a provincial match they could be drawn to meet again, with the winner of the provincial match receiving home advantage. The eight round 1 winners played the eight beaten provincial semi-finalists in round 2 of the qualifiers.
The following teams took part in round 1;
Laois <br /> Longford <br /> Louth <br /> Wicklow <br /> Carlow <br /> Offaly <br /> Wexford <br />
Antrim <br /> Derry <br /> Armagh <br /> Cavan <br /> Fermanagh
In the second round of the qualifiers the eight winning teams from Round 1A and Round 1B played the eight beaten provincial semi-finalists. The round 2 draw was unrestricted â if two teams had played each other in a provincial match they could be drawn to meet again, with the winner of the provincial match receiving home advantage. The eight winners of these matches played each other in Round 3.
The following teams took part in round 2;
In the third round of the qualifiers winning teams from round 2A played against winning teams from round 2A, while winning teams from round 2B played against winning teams from round 2B. Round 3 draw rules did not allow two teams that had played each other in a provincial match to meet again if such a pairing could be avoided. The four winners of these matches played the four beaten provincial finalists in round 4.
The following teams took part in round 3;
In the fourth round of the qualifiers, the four winning teams from round 3 played the four beaten provincial finalists. Round 4 draw rules did not allow two teams that had played each other in a provincial match to meet again if such a pairing could be avoided. The matches were normally held in neutral venues. The four winners of these matches played the provincial champions in the All-Ireland quarter-finals.
The following teams took part in round 4;
The four provincial champions played the four winners from round 4 of the qualifiers. Draw rules 1) Two teams who met in a provincial final could not meet again 2) If one of the provincial champions had already met one of the qualifiers in an earlier match then those two teams could not be drawn together if such a pairing could be avoided.
This was the final year of the knock-out quarter-finals which began with the introduction of the All-Ireland qualifiers in 2001. Following a vote at the GAA congress on Saturday 25 February 2017, the last eight teams in 2018 competed in two groups of four with the winners and runners-up in each group progressing to the semi-finals.
There was no draw for the semi-finals as the fixtures were pre-determined on a three yearly rotation. This rotation ensured that a provinces champions played the champions of the other three provinces once every three years in the semi-finals if they each won their quarter-finals and prevented the champions from the same two provinces meeting in the semi-finals in successive years. If a qualifier team were to defeat a provincial winner in a quarter-final, the qualifier team would take that provincial winner's place in the semi-final.
Cormac Reilly (Meath) returned after missing 2016, while Eddie Kinsella (Laois) retired at the end of 2016.
Each team has a nominal home stadium, though not all teams are guaranteed a home game over the course of the Championship. In addition, games may be played at a neutral or alternate venue. For example, Dublin have not played a Championship game in Parnell Park, their nominal home, since the 2004 Championship.
Matches were broadcast live on television in Ireland on RTÃÂ and Sky Sports under a new five-year contract that was agreed in December 2016. In the United Kingdom, matches were shown on Sky Sports and worldwide coverage was provided on GAAGO. RTÃÂ Radio 1 also had full radio rights to all championship games which were previously shared with Newstalk.
RTÃÂ coverage was shown on RTÃÂ Two on The Sunday Game Live presented by Michael Lyster in high definition. Des Cahill presented The Sunday Game highlights and analysis show on Sunday evening.
RTÃÂ, the national broadcaster in Ireland, provide the majority of the live television coverage of the football championship in the first year of a five-year deal running from 2017 until 2021. Sky Sports also broadcast a number of matches and have exclusive rights to some games including two All-Ireland football quarter-finals. BBC Northern Ireland broadcast all games from the Ulster Championship which are shown live on RTÃÂ, with full deferred coverage later in the evening of those games not shown live.
The Sunday Game team of the year was picked on 17 September, the night of the final. Dublin's James McCarthy was named as The Sunday Game player of the year.
Nominations were revealed on 21 September 2017. The football All Stars were revealed on 3 November 2017. Andy Moran was announced as player of the year and Con O'Callaghan as young player of the year.
GOALKEEPERS
Stephen Cluxton (Dublin), David Clarke (Mayo), Niall Morgan (Tyrone)
DEFENDERS
Jack McCaffrey, Cian OâÂÂSullivan, Michael Fitzsimons, Philip McMahon, John Small, Jonny Cooper (Dublin), Keith Higgins, Lee Keegan, Chris Barrett, Colm Boyle, Brendan Harrison (Mayo), Pádraig Hampsey, Tiernan McCann (Tyrone), Paul Murphy, Tadhg Morley (Kerry), Conor Devanney (Roscommon), Caolan Mooney (Down), Fintan Kelly (Monaghan).
MIDFIELDERS
James McCarthy, Brian Fenton (Dublin), Tom Parsons (Mayo), Colm Cavanagh (Tyrone), Enda Smith (Roscommon), Kevin Feely (Kildare).
FORWARDS
Andy Moran, Kevin McLoughlin, Aidan OâÂÂShea, Jason Doherty, Cillian OâÂÂConnor (Mayo), Ciarán Kilkenny, Con OâÂÂCallaghan, Paul Mannion, Dean Rock (Dublin), Paul Geaney, Kieran Donaghy, James OâÂÂDonoghue (Kerry), Peter Harte, Niall Sludden (Tyrone), Connaire Harrison (Down), Patrick McBrearty (Donegal), Jamie Clarke (Armagh), Daniel Fly