Under Armour signs Jordan Spieth to 10-year contract extension

Jordan Spieth has signed an improved 10-year extension to remain with Under Armour, it was announced on Wednesday. And although financial terms were not disclosed, the contract is said to include plenty of performance-based incentives.

Under Armour, which incredibly surpassed adidas as the second best-selling sports apparel brand in America in 2014, initially snapped up Spieth in January 2013 shortly after he left university to turn pro.

As part of the new deal, Spieth will be kitted from head to toe in Under Armour attire, which will also include golf shoes said to be in production and readying to hit the shelves later in the year.

"I really enjoyed being on this journey with Under Armour since turning professional and I can't wait to accomplish great things together in this next phase of my career," Spieth said in a statement.

Under Armour’s senior director of golf Ryan Kuehl, said the brand’s main strategy was to invest in fewer players and to make sure they are covered almost exclusively with their logo.

"We think that when other logos are on the player, it waters down our brand," he said.

Spieth had a decent 2014, which reached its high in December when he claimed the Hero World Challenge at Isleworth by 10 strokes, shooting 26 under par. The World No.9 will now look to improve his game in 2015, starting at the Waste Management Phoenix Open next week.