Brian Gavin: If the technology is there for referees, why not use it? 

The officials in the two All-Ireland semi-finals put in good performances in sometimes testing circumstances at Croke Park.

MAN IN THE MIDDLE: Referee Joe McQuillan during Sunday's Kerry-Derry clash.  Picture: INPHO/Ben Brady

I’ve mentioned here before how easier football is to referee than hurling but the Kerry-Derry All-Ireland semi-final proved the bigger ball game can still be awkward to officiate.

I’ll come to Stephen O’Brien’s soft free towards the end of the game in a moment but I’ll give the example of David Clifford’s yellow card. In real time, it appeared a justified call for fouling Shane McGuigan but replays showed it was shoulder to shoulder and it was a harsh decision against the Kerry captain.