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NFL footballs take detailed journey from factory to field
What Is the Official Size of the NFL Football? - SportsRec
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What is "The Duke"? History of the NFL's game ball | Pro Football Network
New NFL football with synthetic laces already drawing complaints from QBs - CBSSports.com
NFL Footballs are Still Made by Hand, and Still Made in America - Alliance for American Manufacturing
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$100 Official NFL Football vs. $10 Walmart Knockoff (INSANE Experiment) - YouTube
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American Football Balls - American Footballs – Sports Ball Shop
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Game ball procedure revised in wake of Deflategate – Football Zebras
American Football Official Size - Brown
American Football Ball On White Background Stock Photo - Download Image Now - American Football - Ball, American Football - Sport, Cut Out - iStock
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Super Bowl History: Why Are Footballs Shaped Like That? | Time
File:American football ball.jpg - Wikipedia
For now, tracking chips in NFL footballs are about player performance data, not officiating - Sports Illustrated
WHAT SIZE FOOTBALL SHOULD I BUY? - Big Game USA
Wilson Football Factory - Ada, Ohio
The Duke NFL Football | Wilson Sporting Goods
