China's Soccer Team Misses World Cup, but Manufacturers Still Score - WSJ
A new trend in sports collecting: World Cup match balls becoming the most expensive items of soccer memorabilia, a US ball among them.
Men's World Cup Soccer Ball, the Al Rihla, Has the Aerodynamics of a Champion - Scientific American
Unparalleled football memorabilia from the 1930 FIFA World Cup Opening Ceremony
Foul Ball: Did a N.J. man get duped into buying $100K in bogus sports memorabilia?
Evolution of the World Cup ball as Qatar 2022's Al Rihla is unveiled by Lionel Messi - ESPN
Collections
A History of World Cup Official Match Balls
Ball of Fame: The 10 Most Valuable Official Match Balls of the 21st Century - Urban Pitch
Balls signed by soccer legends – thanks to Pelé – could fetch up to $18K - Talker
The World Cup's New High-Tech Ball Will Change Soccer Forever
The complete guide to football sizes & types
Evolution of the World Cup ball as Qatar 2022's Al Rihla is unveiled by Lionel Messi - ESPN