Which NBA star has been a longtime Under Armour endorser?

Stephen Curry has been a longtime Under Armour endorser.

Curry joined Under Armour in the 2013 offseason after originally being associated with Nike. The partnership became especially important to Under Armour’s basketball business, with Curry serving as the face of its footwear line and later helping lead the separate Curry Brand of shoes and apparel.

His endorsement is more than a conventional advertising deal: Curry has been involved in product development, design and the direction of his signature line. His success with the Golden State Warriors, including NBA Most Valuable Player awards and championships, helped turn the Curry shoe range into a major commercial franchise.

Kevin Durant and LeBron James are also prominent NBA endorsers, but they are associated with other major athletic brands. James Harden was likewise linked to Adidas rather than Under Armour. That makes Curry the canonical answer for this Under Armour question, even though the terms of athlete partnerships can change over time.