FILE - In this Dec. 9, 2012 file photo, Carolina Panthers' Jordan Gross is introduced before an NFL football game against the Atlanta Falcons in Charlotte, N.C. Gross once rented a full-size Winnebago for training camp in Spartanburg, S.C., where players could relax and play cards during breaks from practice and meetings _ a little air-conditioned paradise away from the intense summer heat. The lone rule: Only offensive linemen allowed.(AP Photo/Rainier Ehrhardt, File)
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