The #MayoforSam campaign has been featured on news websites across the country for the last few weeks but the #COYBIB campaign is gathering momentum at the crucial time.
The support campaigns are a huge part of GAA and this year is no different.
While the Mayo campaign may have kicked off weeks ago, the Dublin campaign is now gathering momentum in the weeks running up to the match.
Here are five of the best moments from the #COYBIB campaign so far.
1. Ode to Hill 16
'Ode to Hill 16' was sent into us by YouTube user 'Dub In Exile', Paul Michael Duff. He writes: "I've recently moved to Australia and will be missing this year's All-Ireland final after years of following the Dubs at all levels."
2. 'Jacks and Mollys'
Derek Warfield penned this rousing number and performed it alongside the Young Wolf Tones.
A sporting ballad in the true tradition of the Irish Bards ahead of Sundays Football Final celebrating the great sporting heritage of the Dubs penned by Derek Warfield & performed by Derek Warfield & The Young Wolfe Tones followed by the great Irish Traditional Tune Sporting Paddy
3. This banner
"See you all in Coppers", all the way from NYC. Genius.
4. This car
Not to be outdone by cars simply painted green and red, Niamh Crowley's husband got his car emblazoned with the Dublin GAA crest. We wonder what he'll do with it after Sunday?
5. This Shirt.
Would you wear one of these? They're on sale near Parnell Park.
1 for the Mayo dressing room wall Tshirts on sale @ Parnell Pk - seller didn't want to be identified for some reason pic.twitter.com/6dg4RaOHBa— Paul Collins (@paulcollinstipp) September 5, 2013
Honourable mention to these cupcakes that were apparently on sale in the Dail, with the Dublin cupcakes outselling the Mayo cupcakes.