Be very careful, Chris. Do your own artwork. Like I said, I use Madden's Playbooks as well, but I draw them all out on index cards and modify them to accomodate MF i.e. OGs and OTs don't pull if there's a guy in front of them!?!
Why not just point to this website instead of unintentionally making people think it's your work. Share with the PEOPLE, but be careful what and how you share!
http://www.sportsgamer.com/playbooks...ack&set=Normal