USC coach Lincoln Riley is encouraged by the offensive line's progress so far this season despite its struggles against Michigan's defensive front.

This article originally appeared on Trojans Wire: Lincoln Riley and his USC football staff failed to clean up mistakes USC's Woody Marks made a heck of a play to take the football from Grant. Williams is the seventh Heisman winner to have his number retired by the school.

ANN ARBOR, Mich. — Certainly, Lincoln Riley thought his introduction to the Big Ten would go much different. But the bruising, physical conference welcomed him and the USC Trojans in by showcasing a complete lack of a passing offense on the other side, along with a ferocious defensive attack.