FILE - In this May 23, 2017, file photo, Miami Dolphins running back Jay Ajayi speaks during a news conference after an NFL football practice, in Davie, Fla. Dolphins coach Adam Gase says running back Jay Ajayi is being evaluated for a possible concussion. Ajayi was hurt during Monday's, July 31, 2017, training camp practice. (AP Photo/Wilfredo Lee, File)
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