Outside of the earnings and holiday seasons, very few weeks will ever be as important as the next seven days for Under Armour UA. The sports apparel retailer kicks off the fun with a stock split after Thursday’s closing bell, and then it will root on its two biggest sponsored athletes, Jordan Spieth and Stephen Curry, as they both try to make history. (Also Read: Under Armour and 3 Other Growth Retail Stocks to Bank Upon) Almost nine months after it was announced, Under Armour’s stock split date is here. Under Armour will actually be issuing a new class of stock that will be distributed via a 2-for-1 split. The company will issue non-voting Class C shares which will begin trading tomorrow, April 8, under the ticker “UA.C.” In the sports world, Thursday marked the start of the season’s first major golf tournament, The Masters. Under Armour’s treasured Jordan Spieth looks to defend his title this year. Spieth and Under Armour recently released a line of signature golf shoes, marking the company’s first venture into the golf shoe market. Under Armour’s other golden boy, Stephen Curry, also looks to make history this week, as his Golden State Warriors wrap up the regular season. Curry and the Warriors sit at 69-9 with just four games left in the season. If the team wins its final four games, it will surpass the 1996 Chicago Bulls for the best single-season record in NBA history. The undeniable and historic success of Spieth and Curry has been the driving force behind Under Armour’s recent success. Always the underdog to the rosters of Nike NKE and Adidas ADDYY, which are stacked with world-class athletes, Under Armour hit at goldmine when both Spieth and Curry became arguably the best in their respective sports. Viewers can expect to see Under Armour’s logo throughout the NBA playoffs and the entire summer golf season, as all eyes will be on Curry and Spieth. Currently, Under Armour has a Zacks Rank #2 (Buy). Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report NIKE INC-B (NKE): Free Stock Analysis Report ADIDAS AG-ADR (ADDYY): Free Stock Analysis Report UNDER ARMOUR-A (UA): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research