The ''AP! AP!'' and ''MVP! MVP!'' chants started as soon as Adrian Peterson was spotted driving into the parking lot. The purple-clad crowd of autograph-seeking Vikings fans gathered at the annual reporting day saved the loudest cheers for a 30-year-old running back who played in only one game last season, formally welcoming the once-marooned Peterson back to Minnesota State University as players moved into their dorm rooms for training camp on a sunny Saturday. It's definitely a good feeling to know that the people do have your back,'' Peterson said, a little more than three months after the NFL reinstated him following the suspension he served for his involvement in a child abuse case. More...