Conflict between two brothers and shoe manufacturers, Adolf "Adi" and Rudolf "Rudi" Dassler
The Dassler brothers feud was a conflict between two brothers and their respective shoe manufacturers, Adolf and Rudolf Dassler, in the latter half of the 20th century. Their feud led to the creation of Adidas and Puma, two of the biggest shoe manufacturing companies, and started a long-lasting rivalry between the two companies, reflected in rivalries between football clubs and a culture of animos... Wikipedia