‘Aside from Rob Johnson’s parents, it’s unlikely anybody at Ralph Wilson Stadium will be looking at the Buffalo Bills’ quarterback more admiringly on Sunday than San Diego Chargers coach Mike Riley. The reason isn’t just because Riley is saddled with a quarterbacking combination that has compiled the second-worst combined passer rating in the NFL this season. Riley was the offensive coordinator at Southern California in Johnson’s junior and senior seasons and loves the Bills’ QB. "I think the world of him," Riley said. "I really, really, really appreciated my time with Rob at USC. It was a great experience. I think he’s one of the most coachable people I’ve ever been around." The feeling is mutual.’