If you're a rookie, you ride. Aaron Jones can still hear Mike McCarthy's proud Pittsburgh accent reverberating in the back of his head, as the former Packers head coach outlined the ground rules for players participating in their first training camp in 2017. Among the key topics was the tradition of players riding kids' bikes to practice. The 5-foot-9, 208-pound running back had been briefed about the timeless ritual prior to the meeting, but it sounded different coming from the head coach.