Arkansas' Rawleigh Williams III, who was second among SEC running backs last season with 1,360 rushing yards, has decided to give up football after suffering a second neck injury. Williams, who would have been a junior next season. announced his decision in a heartfelt letter on Arkansas' official website. His letter was titled "Next Chapter" and comes on the heels of a neck injury he suffered during the Razorbacks' final spring scrimmage last month. Williams had to be carted off the field and taken to the hospital. "I've seen the replay. I saw a normal hit. That scared me," Williams wrote in his letter. ?"It shows me it doesn't take a big hit at this point. Any little thing can trigger it. I also saw the reaction of my mom and my sister. That broke my heart. I can't do this anymore. I want to be able to walk." As a freshman in 2015, Williams suffered the first neck injury in a game against Auburn and underwent surgery to fuse a disk in his neck. "I'm moving onto...