The cracks are the same ones that first began to appear last November, when Oregon lost to Stanford and then Arizona. At the time, Oregon’s road loss against the Wildcats was its first defeat at the hands of an unranked opponent since 2009; Thursday’s loss was the first to an unranked team at Autzen Stadium since 2008. If second-year head coach Mark Helfrich is unable or unwilling to define himself as anything beyond the caretaker of Chip Kelly’s legacy in Eugene, he’s in danger of allowing the results to do so for him.