![Michael Phelps performs a jump test on stage with Kevin Plank, Under Armour Founder and CEO, during his Keynote Address at the Venetian during the 2017 International CES, a trade show of Michael Phelps performs a jump test on stage with Kevin Plank, Under Armour Founder and CEO, during his Keynote Address at the Venetian during the 2017 International CES, a trade show of](https://c8.alamy.com/comp/TY9T5G/michael-phelps-performs-a-jump-test-on-stage-with-kevin-plank-under-armour-founder-and-ceo-during-his-keynote-address-at-the-venetian-during-the-2017-international-ces-a-trade-show-of-consumer-electronics-in-las-vegas-nevada-january-6-2017-the-jump-test-is-performed-with-shoes-that-measures-the-rediness-of-an-athlete-prior-to-working-out-photo-by-molly-rileyupi-TY9T5G.jpg)
Michael Phelps performs a jump test on stage with Kevin Plank, Under Armour Founder and CEO, during his Keynote Address at the Venetian during the 2017 International CES, a trade show of
Rio Olympics 2016: Michael Phelps wore Nike instead of Under Armour on the latest Sports Illustrated cover — Quartz
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