Before the Move: Watch Under Armour after Spieth wins British open

Jordan Spieth beat fellow American Matt Kuchar by three strokes in a thrilling duel at Royal Birkdale on Sunday. This was his third major title, with the 23-year-old going to the U.S. PGA Championship needing only that title to complete the Grand Slam. Spieth, who won the Masters and the U.S. Open in 2015, will turn 24 on Thursday, and therefore has become the second player to win three legs of golf's Grand Slam before turning 24. UNDER ARMOUR: Jordan Spieth is sponsored by Under Armour (UA, UAA), having first signed with the company in January 2013. Two years later, the golf phenom and the sports apparel and footwear maker renegotiated a new, 10-year deal that assured no logos from Nike (NKE), Adidas (ADDYY) or any other competitor would appear on Spieth's shoes or clothing until after the 2025 season, according to ESPN. The athlete's Masters victory back in 2015 sent shares of Under Armour higher. PRICE ACTION: According to Google Finance data, Under Armour shares closed at $83.75 on April 10, 2015 and then closed at $85.11 on April 13, 2015, giving it a gain of $1.36, or 1.6%, on the day after that his Master's win. OTHERS TO WATCH: Golf goods retailers include Dick's Sporting (DKS), which owns the Golf Galaxy brand, and Callaway Golf (ELY). "Before the Move" is The Fly's recurring series of exclusive stories that identify potentially market moving events, along with analyst predictions, ahead of the news.