By James McMahon
After the drama of their drawn encounter, Kerry and Mayo head to the Gaelic Grounds in Limerick to sort who will reach the All-Ireland football final - while Donegal and Dublin line up at Croke Park in their quest to reach the decider.
In the Liberty Insurance Senior Camogie Championship, Cork and Wexford must meet again to decide who will face Kilkenny in the 14 September final.
The first semi-final in the TG4 Ladies' SFC sees Dublin take on Galway.
SATURDAY 30 AUGUST
1430 Cork v Wexford - All-Ireland senior camogie semi-final replay, Walsh Park, Waterford.
Live updates on Saturday Sport on RTÉ Radio 1.
1515 Dublin v Galway - All-Ireland ladies' senior football semi-final, Cusack Park, Mullingar.
Live coverage on TG4.
1700 Kerry v Mayo - All-Ireland SFC semi-final replay, Gaelic Grounds, Limerick.
Live coverage on Saturday Sport
SUNDAY 31 AUGUST
1330 Donegal v Dublin - All-Ireland MFC semi-final, Croke Park.
Live coverage on TG4
1530 Donegal v Dublin - All-Ireland SFC semi-final, Croke Park
Live coverage on Sunday Sport from 1400.
Saturday: Mainly dry with a mixture of cloud and sunny spells.
Sunday: Another dry day with temperatures topping 20 degrees in a moderate southerly breeze.
ALL-IRELAND SFC SEMI-FINAL REPLAY
Kerry v Mayo, Gaelic Grounds, 1700
The dust has settled on what was a gripping encounter last weekend at GAA HQ. With a four-point advantage on the scoreboard and a man to the good, Kerry looked on course to reach the 21 September decider at the half-time break.
However, Mayo stirred themselves with much gusto in the second period, and surged five clear. We all applauded their efforts, a new breed of Green and Red has suddenly emerged.
Kerry's rescue act saw 'The Star' enter the fray. Kieran Donaghy's knock down to James O'Donoghue resulted in a green flag. The gasps of breath became even more audible as the Kingdom had a chance to win it. Parity, however, was deemed a fair outcome by most observers.
Yet, considering Mayo's dominance in the second period, where they held Kerry scoreless for a combined period of 22 minutes, one would rightfully conclude that James Horan's men should now be preparing for a third consecutive final
Much has been said about the decision to stage the replay at the Gaelic Grounds. We are where we are, however, and both sides will now be firmly focused on the clearing this hurdle before an expected full house at the Limerick venue.
The impact that Kieran Donaghy made last Sunday leaves one to ponder what impact he would he made had he been on the pitch for longer. He makes the Kerry full-forward line stronger, allowing the likes of Paul Geaney a freer role to show what he can do. Mayo's Ger Cafferkey could be in for a testing evening on Shannonside.
Kerry will also point to the midfield display of David Moran. His points in the opening half the last day said much about the Kingdom's dominance in that period. Further back, Paul Murphy, Peter Crowley and Fionn Fitzgerald raided with intent and their efforts found currency on the scoreboard.
Mayo prospered when they went at Kerry and the likes of Seamus O'Shea, Donal Vaughan and Colm Boyle led the charge. Alan Feeman and Andy Moran both came off the bench with contrasting displays last Sunday. Will James Horan risk Freeman again? Will Richie Feeney get a look in?
In the opening 35 minutes last Sunday, Mayo, at times, played like they were in awe of Kerry.
Such trepidation is most unlikely to bee seen this weekend. The westerners still are the best bet to finish the deal.
ALL-IRELAND SFC SEMI-FINAL
Donegal v Dublin, Croke Park, 1530
28 August 2011. Pat Spillane's comments on the first half of the Dublin v Donegal semi-final summed up his frustration and that of many others. The opening 35 minutes yielded only six scores in a game not for the purists.
That said, Donegal came with a plan and if they had converted a goal chance shortly after the interval, they would have won the game. The Dubs found a way to break the stranglehold and ran out 0-08 to 0-06 winners.
Since then, both counties have tasted All-Ireland success. Ahead of their latest renewal, we expect a contest that will be more pleasing on the eye than was the case three years ago.
Dublin have really pushed on this season. As for Donegal, this summer has not seen them hit the heights of 2012.
Former Manager Brian McEniff believes they will have to find a new level of performance and a bit of luck if they are get to the final. What would also aid their cause is for Colm McFadden to up his game.
Jim Gavin's troops have not been tested for a full 70 minutes in this year's campaign. Donegal have the wherewithal to provide such a test but whether or not such a challenge will reap a dividend is doubtful.