Vital Con O'Callaghan has form against the Kingdom and could be the difference in Sunday's clash

Con O'Callaghan remains an injury doubt for Sunday's All-Ireland football semi-final against Kerry but if he is to start, Kerry's defence will have to be on high alert to stop one of Dublin's main threats.

O'Callaghan missed Dublin's quarter-final win over Cork through injury, and Dessie Farrell admitted after the game that the corner-forward and James McCarthy were in a race against time to be fit for the last four clash.

There is no doubt the Cuala star is one of the most potent forwards in the game and in his few outings against Kerry in the past he has proving to be a thorn in the Kingdom side.

It's the biggest rivalry in men's Gaelic football, yet the sides have met just twice in the championship since the 2016 All-Ireland semi-final. Sunday's clash provides an opportunity for the latest chapter.

We detail below O'Callaghan previous league and championship appearances against Kerry.

30 January 2016, Allianz Football League Division 1: Dublin 2-14 Kerry 0-14

In the opening league match of the 2016 season, Con O'Callaghan was a late second half substitute and in doing so he made his senior inter-county debut for Dublin.

9 February 2019: Allianz Football League Division 1: Kerry 1-18 Dublin 2-14

Scores:1-00

It was a packed out Austin Stack Park in Tralee, as the Dubs lost to Kerry by a point in their national league tie. O’Callaghan scored Dublin’s first goal in the 25th minute as his trademark direct running opened up a goal chance before he got a stroke of luck with his shot deflecting into the back of the net of Brian Ó Beaglaoich.

Kerry eventually run out winners by a point, thanks to Gavin Crowley's injury-time winner.

Goal for the Dubs! It's the perfect response from Con O'Callaghan who weaves his magic in front of the