My son who will be 9 in a few weeks is WAY into sports and wears jerseys almost every day of the week, mainly football and basketball. Lots of boys his age at school wear them too.
For his bday he asked for the new Nerf 'Hail Fire' gun, jerseys, itunes card, and a few specific lego sets.
Both of my boys are always WAY into sports equipment and are always asking more. Apparently you can never have too many footballs, basketballs, baseball bats etc.
I can't believe I forgot about nerf guns! We have an entire arsenal here and every year my dses ask for more.