Only one end zone will be used for offense Saturday at Wrigley Field for the Illinois-Northwestern game because of safety concerns, the Big Ten announced Friday, and the Chicago Cubs said the decision caught them by surprise. Whichever team is on offense Saturday will head toward the west [left] end zone, according to an ESPN.com report. The east end zone is just feet away from the right-field wall, and although there is padding, there still were concerns that players could be injured there.