Read this in this article:
http://opendorse.com/blog/the-history-of-athlete-endorsements-part-two/
Michael Jordan was a self-proclaimed “Adidas fanatic since high school.” He wanted to sign with Adidas out of college but they did not offer him an endorsement deal. So, after some convincing from Nike CEO ,Phil Knight, MJ opted to sign with Nike instead. In 1985 the Jordan I was released in red and black to match the Chicago Bulls uniform.
Could you guys imagine how sneaker culture would be today if Jordan signed with Adidas?