Why the XFL failed again - Business Of Sport - XFL
Inside the short, unhappy life of the Alliance of American Football - ESPN
Broadcast TV Big Part Of XFL Deals With ESPN, Fox
XFL Attendance through Week 5 AND 2020's final attendance as a barometer for this point in the season : r/xfl
From USFL to AAF: A History of Spring Football - Football Stadium Digest
The NFL's new developmental league? Alliance of American Football AAF has big plans - ESPN
Latest pro football league, AAF, doomed to failure
Latest pro football league, AAF, doomed to failure
The AAF Failed Because All Minor League Football Does - The Ringer
Pro football: Why the XFL could succeed where the AAF failed