ERSC Inc - Friday #FunFacts-- On this day in 1873 – #Yale, #Princeton, #Columbia, and #Rutgers universities draft the first code of American #football rules. Wikipedia ERSC Inc
American football - Wikipedia
Comparison of American football and rugby union - Wikipedia
How to Play American Football: 10 Steps (with Pictures) - wikiHow
Australian rules football - Wikipedia
High school football - Wikipedia
Trey Lance, American Football Wiki
Wikipedia describes Lions safety as Aaron Rodgers' father after forcing three interceptions against 4x MVP
Kickoff (gridiron football) - Wikipedia