At Chicago State University, football is a whole new ballgame

Linebacker Mark Pullman followed a tight end into the flat, slipped in front of him for an interception and took it back for a house call. All the way across the left-field foul line. Wait, what? This was football practice at Chicago State University less than 48 hours before the first game in school history, which is at noon Saturday against Division II Roosevelt at SeatGeek Stadium in Bridgeview. Chicago State — debuting as an independent in the Division I FCS ranks — will be the home…