Phillies' Bryce Harper, Under Armour Agree to Contract Extension, 'Together We've Made History'

While Under Armour ended its longtime partnership with Golden State Warriors star Stephen Curry near the end of 2025, the company managed to retain one of the biggest stars in all of baseball.

Philadelphia Phillies star slugger Bryce Harper announced in an Instagram post that he agreed to a contract extension with Under Armour.

"Never a doubt. After 15 years, I'm proud to continue my partnership with Under Armour," Harper wrote in the caption. "Together we've made history and that doesn't stop now!"

Harper originally signed with Under Armour in 2011 before his MLB debut the following year, and he was signed to a historic 10-year contract extension with the company in 2016.

Harper helped lead the Phillies to a 96-66 record and an NL East title in 2025, hitting .261 with 27 home runs and 75 RBI. Philadelphia lost to the eventual World Series champion Los Angeles Dodgers in the NLDS.

Keeping Harper in the fold is a strong sign that Under Armour is ready to move forward into a new era without Curry on board.