I really, really like your site... but... Brian Scalabrine is missing in the player profile pictures?
EDIT: And Michael Finley... but that's forgivable.
I for one like white lettering on a black background. My eyes work in weird ways. But, I have been taught in all of my marketing and visual presentation type classes that it's a bad idea to use the white lettering and black backgrounds.
I respectfully disagree with Jeff, and of course he knows a lot more about this stuff than I do, about the basic format of your blog. I really like the profile pictures at the top, and I found the website to be very simple to understand where to click for what I want.
You've done some good work so far, very impressive, now just get yourself a fan base and you're made in the shade.
I liked DL's idea as well... A Celtics blog for teens, although that might narrow your demographic more than you want. I don't know how big you want it to end up being.
Anyway, good luck with everything.
Here is a TP for now!