Age groups in the Eastern Football League are determined at 01-January. To play in the under X age group in the 2011 season you need to be under X years old on 01-January-2011. As an example, Andrew Lion was born on 01-Feb-2000, his age on 01-January-2011 is 10 so he can play in the under 11 team for the 2011 season (even though he will turn 11 before the 2011 season starts). His sister, Jenny Lion, was born on 12-December-2002, she is 8 on 01-January-2011 so she can play under 9 team for the 2011 season.