Enda McGinley has already asked the question so I'll venture my top-of-the-head analysis that there is some serious thinking to be done within Ulster football managements after witnessing that today.
The Dubs ripped apart Tyrone's defensive blanket and Mayo will know full well that something close to a man-to-man approach, granted with a sweeper, will work better for them on 17 September.
We haven't heard Mickey Harte's analysis yet and we will bring it to you on the BBC Sport website as soon as we get in. His take will be interesting.
After that display, Dublin will be raging hot favourites to complete a three-in-a-row but Mayo won't mind that one bit.
People forget that they beat the Dubs in the 2012 All-Ireland semi-final and all the contests between the counties in recent years have been close.
Expect nothing different in three weeks.