This Aug. 3, 2012 file photo shows Dallas Cowboys running back Lawrence Vickers (47) as he stretches out with teammates tight end Jason Witten (82) and running back Felix Jones (28) during NFL football training camp. Vickers grew up watching Cowboys games with his father, so it was special for both of them when the veteran fullback signed a free-agent deal with the team. But Lawrence Vickers Sr., a lifetime Cowboys fan, never got to see his son play with a star on his helmet. (AP Photo/Gus Ruelas, File)