Mertz, No. 14 Wisconsin rout Illinois 45-7 in Big Ten opener

Wisconsin quarterback Graham Mertz throws a pass during the first half of Friday’s game against Illinois. (AP Photo/Morry Gash)

Wisconsin quarterback Graham Mertz throws a touchdown pass to Wisconsin’s Mason Stokke during the first half Wisconsin’s game against Illinois on Friday, in Madison, Wis. (AP Photo/Morry Gash)

MADISON, Wis. — Wisconsin’s Graham Mertz gave a star-making performance on the opening night of the Big Ten’s pandemic-delayed season.