Here's the permutations for what lies ahead for Donegal, Clare, Cork and Tyrone

Tyrone's 3-14 to 0-10 win over Clare means the lie of the land is much clearer in Group 3 of the All-Ireland SFC.

Donegal defeated the side managed by Brian Dooher and Feargal Logan 0-21 to 0-14 in Ballybofey to open their campaign, before going down to Cork on a 3-9 to 0-16 scoreline on Saturday. Cork started off with a 1-13 to 1-11 win over Clare in Ennis.

The weekend after next, June 15/16, it's neutral venues for Donegal's clash with Clare and the meeting of Cork and Tyrone. The times, days and venues are yet to be confirmed. The matches will be played simultaneously. 

The group winner will qualify directly for the quarter-finals, with the second-placed sides getting home advantage against the third-placed teams in the preliminary quarter-finals, which will be played the following weekend, June 22/23.

Head-to-head is the prime differential if two teams finish level on points. If three teams do, it's score difference first; then highest total points for; then goals scored and if all else fails, a play-off.

Donegal beat Clare and Cork win/draw with Tyrone
If Cork pick up anything from their clash with Tyrone they will win the group. So if Donegal win against Clare they will be guaranteed second place. 

Donegal beat Clare and Tyrone win against Cork
If Tyrone beat Cork and Donegal get the better of Clare, it means Tyrone, Cork and Donegal will be all on four points, and will be separated by score difference. At the minute Cork are +4, Donegal in second are +5 and Tyrone are +7, with Clare on -16. Therefore, Donegal will have to beat Clare by three points more than Tyrone defeat Cork, to rubberstamp top-spot.

If Donegal lose to Clare 
If Clare beat Donegal, they will also possess the winning head-to-head, which will leave both teams on two points. Therefore, Clare will want Tyrone to pick up at least a draw against Cork to seal third place in the group and Donegal would be out. If Clare and Cork win their last fixtures, Donegal, Tyrone and Clare will all end up on two points, so score difference will decide who finishes second, third and fourth, with Cork winning the group.

If Donegal draw with Clare
A draw will mean the end for Clare, with a point taking Donegal onto three, which will be enough for a preliminary quarter-final. If this is coupled with a Cork win, it will mean second-place finish for Donegal; a draw in both fixtures will also be enough for Donegal to edge Tyrone into second-place with both teams ending up on three points and Donegal winning the head-to-head.