View photosArkansas football coach Bobby Petrino speaks during a news conference at a Fayetteville, Ark., on Tuesday, April 3, 2012, after being released from a hospital after he was injured in a motorcycle accident on Sunday, April 1. The 51-year-old says he was not wearing a helmet at the time of the crash, which occurred on Arkansas Highway 16 in Madison County _ about 20 miles southeast of Fayetteville. State law does not require an adult rider wear a helmet. (AP Photo/Gareth Patterson)MoreFAYETTEVILLE, Ark. (AP) — Arkansas has put coach Bobby Petrino on administrative leave after crash with female employee.