Apart from his charming smile and fun-loving nature, the one thing that has remained the same is Spieth's stylish presence on the course, thanks to his long-term partnership with Under Armor.

Horses aren’t necessarily the first thing you think of when Under Amour is mentioned ... Its first product was a fitted T-shirt called “The Shorty.” As the company’s name suggested ...

Under Armour is back as an NFL partner. Five years after the previous Under Armour and NFL deal ended, the two parties have announced a long-term partnership that makes Under Armour an official ...