Tommy Walsh admits nervousness that Kerry are 'undercooked' 

Walsh is quick to add the caveat that Kerry haven't been properly stress-tested yet

Tommy Walsh of Kerry shakes hands with Niall Morgan of Tyrone after the Allianz Football League Division 1 semi-final match between Kerry and Tyrone at Fitzgerald Stadium in Killarney, Kerry. Photo by Brendan Moran/Sportsfile

If you include the McGrath Cup, then Kerry have played 13 competitive games so far this year and leaked just two goals. One of those goals, from Monaghan's Conor McManus back in February, came from a penalty, so that's one goal conceded from open play in around 1,000 minutes of football.

It's the oldest cliche in Gaelic football that while Kerry will always have the forwards to challenge for All-Irelands, their defence can be vulnerable. Well not this season, so far at least.