Inter-county McKernan has been a member of the
Down team since 2008 but made his debut in 2007. He also plays Midfield or Half Forward. He started at centre back in
2010, in which Down lost 0-15 to 0-16 to
Cork. Kevin won a
Dr McKenna Cup in 2008 scoring 1 point from play he won an
Ulster Under-21 Football Championship in 2008 beating
Derry 3-11 to 1-14. ==Family==