Hype swirls for Sam Darnold, but the key to USC may be a bulked-up Ronald Jones II
(LA Times Music)

USC´s offense zipped down the field against the starting defense on Tuesday for one of the first times in preseason camp. Occasionally, quarterback Sam Darnold struck with a long, vertical pass over the top. But most often, it was running back Ronald Jones II who pounded the Trojans´ front seven....