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Why is Michael Phelps, Under Armour's Olympic star, wearing Nike on SI's cover? – Chicago Tribune
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Why is Michael Phelps, Under Armour's Olympic star, wearing Nike on SI's cover? – Chicago Tribune
Michael Phelps wears Nike on SI cover, despite Under Armour deal
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Why is Michael Phelps, Under Armour's Olympic star, wearing Nike on SI's cover? – Chicago Tribune
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