Coaching: In eight non-COVID years as the head coach of a blue blood that should, theoretically, be contending for national championships, Lincoln Riley has yet to produce a top 30 defense by FEI or win a College Football Playoff game. Surely, those two things aren’t related? Riley will now have his fourth defensive playcaller in his fifth year at USC, after Alex Grinch and Brian Odom came up short and reigning DC D’Anton Lynn departed for the same job at his alma mater Penn State. Riley is repl…