Osi Umenyiora is creating a new path for African talent to make it to the NFL
Emmanuel Okoye: The NFL Academy prospect discovered by Osi Umenyiora and wanted by the national champions and Deion Sanders, NFL News
IFL Rules : What Makes the Indoor Game Different? - San Diego Strike Force
What is the difference between arena football and NFL?
Arena football, American Football Database
The NFL's mission is to reach as many fans as possible - Sports Illustrated
Here's All You Need To Know About Arena Football
NFL Has Big Plans in London, Germany, Mexico, and Beyond
What is arena football? Is it different from the normal football we know?
The NFL is on a long business winning streak. We asked insiders and experts for the next frontiers the league might try to conquer
Similarities and differences between the AFL and NFL
Charlotte Thunder arena football: tickets on sale for championship game after undefeated season - Charlotte On The Cheap