Dublin on course for five-in-a-row after devastating second half blitz against Mayo in All-Ireland SFC semi-final
- Dublin face Mayo in the Championship for the fifth time in four years
- Dublin beat their great rivals by a point in the 2017 final
- The 2016 final and 2015 semi-final between the two sides both went to replays
We're underway at Croke Park and, as expected, it's riveting stuff.