![American swimming star Michael Phelps, second right, practises during a promotional event for sportswear brand Under Armour in Shanghai, China, 7 Nove Stock Photo - Alamy American swimming star Michael Phelps, second right, practises during a promotional event for sportswear brand Under Armour in Shanghai, China, 7 Nove Stock Photo - Alamy](https://c8.alamy.com/comp/W83X9J/american-swimming-star-michael-phelps-second-right-practises-during-a-promotional-event-for-sportswear-brand-under-armour-in-shanghai-china-7-nove-W83X9J.jpg)
American swimming star Michael Phelps, second right, practises during a promotional event for sportswear brand Under Armour in Shanghai, China, 7 Nove Stock Photo - Alamy
Under Armour Premieres New RULE YOURSELF Campaign Film Featuring Michael Phelps At Global Headquarters In Baltimore
![Michael Phelps on Under Armour, mental health and the Ravens' playoff loss - Baltimore Business Journal Michael Phelps on Under Armour, mental health and the Ravens' playoff loss - Baltimore Business Journal](https://media.bizj.us/view/img/11579698/phelpstowitjan-2020*1200xx2094-1178-0-61.png)
Michael Phelps on Under Armour, mental health and the Ravens' playoff loss - Baltimore Business Journal
![Under Armour on X: "Rule: Block out the noise. @MichaelPhelps #RuleYourself 🇺🇸 https://t.co/SrQQPu03yt" / X Under Armour on X: "Rule: Block out the noise. @MichaelPhelps #RuleYourself 🇺🇸 https://t.co/SrQQPu03yt" / X](https://pbs.twimg.com/media/CpccpeKWEAAwB1t.jpg)
Under Armour on X: "Rule: Block out the noise. @MichaelPhelps #RuleYourself 🇺🇸 https://t.co/SrQQPu03yt" / X
![Michael Phelps Teams with Under Armour for 'Rule Yourself' Campaign Pre-Summer Olympics!: Photo 3602350 | 2016 Summer Olympics, Memphis Depay, Michael Phelps Photos | Just Jared: Entertainment News Michael Phelps Teams with Under Armour for 'Rule Yourself' Campaign Pre-Summer Olympics!: Photo 3602350 | 2016 Summer Olympics, Memphis Depay, Michael Phelps Photos | Just Jared: Entertainment News](https://cdn01.justjared.com/wp-content/uploads/2016/03/phelps-teams/michael-phelps-underarmour-before-rio-olympics-10.jpg)