Penn State improved to 4-0 Saturday night with a convincing win over an Illinois squad that came into the game ranked 19th in the Associated Press Poll. Even with the loss, the Fighting Illini remain ranked in both polls, coming in at No. 25 in the Coaches Poll and No. 24 in the AP Poll. That could prove to be vital for Penn State’s College Football Playoff resume. “Overall, I’m really, really happy with our guys,” said Penn State head coach James Franklin after the game. “That is a good football team. You’ve got to give Illinois and Coach [Bret] Bielema a ton of respect. That game really play…