A promising player at school for Clongowes he made his debut for Leinster in 2005 and has represented Ireland at schools, Under 19 and A levels.

The Louth native, now aligned with UCD, was a member of the 2007 RBS 6 Nations squad but did not win his first cap until the summer tour to Argentina. Kearney has been impressing for Leinster in both the Magners League and Heineken Cup.

He made his RBS 6 Nations debut against Italy in February 2008 and went on to win caps in each of the games, turning in some eye catching performances. Kearney also played the two summer tests against New Zealand and Australia.

The 08/09 season saw his star continue to rise. His coolness under a high ball, counter attacking pace and seige gun boot saw him pick up a Grand Slam and Heineken Cup winners medal as well as place in the 2009 Lions squad.