Wolf: Several freshmen could play important roles this season

USC Trojans wide receiver Joseph Lewis IV. (1) during USC football practice on Brian Kennedy/ Howard Jones Field on the campus of the University of Southern California on Saturday, Aug. 05, 2017 in Los Angeles. (Photo by Keith Birmingham/SCNG)LOS ANGELES >> Former USC coach Pete Carroll used to give extra practice time to incoming freshmen the first week of training camp, in order to see how his prized recruits actually looked in person.

Sometimes players such as linebacker Brian Cushing or wide receiver Mike Williams would immediately emerge and make it easy to predict they could play a significant role. It was not a foolproof way to predict greatness, however, because Reggie Bush did not…