Road To Rio: Under Armour Will Use The 2016 Olympics To Expand Its Reach Into A $270 Billion Global Market

Kelley O'Hara stands out among her peers on the U.S. women's national soccer team. The star defender is the only one who wears Under Armour soccer cleats. That's just the way she likes it. 

"I like that [Under Armour is] smaller;  at this point they're technically still an underdog ...  I've always gravitated toward the underdog," O'Hara, 27, told International Business Times about the sports brand that jumped into the soccer world only seven years ago.