NFL 2015 first-round preseason grades

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Aug 22, 2015; Houston, TX, USA; Houston Texans cornerback Kevin Johnson (30) celebrates after a play during the first quarter against the Denver Broncos at NRG Stadium. Mandatory Credit: Troy Taormina-USA TODAY Sports

A. <p>Houston Texans general manager Rick Smith told <a href=. CB. Houston Texans. KEVIN JOHNSON

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