Nike, despite its brand dominance, has seen a 27% loss YTD, while Adidas has delivered a 24% gain, post-Yeezy settlement.

At Adidas, 50 year-old CEO Herbert Hainer is the son of a butcher who opened his first business, a pub, while still a student in business school. His main sport was football. His counterpart at Nike .

Eight years after they split up, Rutgers Athletics and Nike are getting back together.

Analysts say that Nike, by contrast, has fallen behind on R&D, while Adidas has become too reliant on its range of fashion trainers. (Fans of its Samba model ... stories in business and technology ...