Under Armour's Attack on Nike | Signature Sneakers | 3

<p>When Michael Jordan signed with an upstart running shoe company called Nike in the 1980s, it revolutionized the signature sneaker landscape and made Nike the brand to beat. Under Armour made a similar play signing Steph Curry in 2013. But it didn’t pan out quite the way they hoped. Still, nowadays it seems like every star athlete needs a signature line. Tim Newcomb is a sneaker and sports tech reporter whose work has appeared in Forbes, Sports Illustrated, Esquire and …