Some Raiders fans had started heading for the exits midway through the fourth quarter after the Cardinals scored 20 unanswered points. [...] he watched Derek Carr lob a pass into double coverage and the Cardinals’ Cariel Brooks returned the interception 81 yards for a touchdown. Just like that, after a failed two-point conversion, the Raiders were down 16-15 and a dominant first half by their defense wasn’t the main story line. Because the Cardinals’ defense ate the Raiders’ offensive line for dinner, and Oakland running backs could muster only 28 yards on 18 carries through the first three quarters. A national television audience did get to see first-round pick Amari Cooper, after some early battles with the sun, pull down four catches for 62 yards.