Colin Kaepernick 'demanded $20million from the upstart XFL, but the fledgling league refused'
Alliance of American Football suspends operations after just eight games, US sports
United States Football League - Wikipedia
Alliance of American Football's season reportedly over; league suspends operations
The New A.A.F. Is Betting on Football, and on Betting - The New York Times
ANALYSIS: Why Unionization Efforts May Run Out of Steam in 2023
AAF Suspends Football Operations: Why the League Might Be Folding After Just 8 Games
AAF Coaches, Execs Shocked, Upset With Football League's Downfall
Lamar Jackson Trade: NFC Team 'Front-Runner' for MVP QB?