Jack Hoffman just might go down as the biggest star of the Nebraska spring game. And he’s only 7 years old. Hoffman, of Atkinson, Neb., has won the hearts of fans and everyone in the football program for his courageous bout with brain cancer. Star running back Rex Burkhead befriended Jack last year and is the captain of the support network known as “Team Jack.” Wearing a miniature Burkhead uniform complete with a No. 22 jersey, Jack ran onto the field late in Saturday’s scrimmage. On a fourth-and-1 play, he took a handoff from Taylor Martinez. Jack started running left, but Martinez redirected him. The little guy turned on a dime and followed a wall of blockers down the field. Players from the Red and White squads left their sidelines and followed him into the end zone to mob him and lift him on their shoulders after his 69-yard touchdown. The crowd of 60,174 at Memorial Stadium cheered as Jack celebrated — a moment that left his father, Andy, misty-eyed on the sideline. Asked what he was thinking when he ran onto the field, Jack said, “Scoring a touchdown.” And when he broke free and scored? “It felt awesome.” And the crowd reaction? “Really awesome.”