A 21-year-old St. Peter man is now charged in Sunday’s attack on former MSU-Mankato football player Isaac Kolstad. Trevor Shelley is accused of sucker-punching Kolstad and fleeing the scene before ex-Gopher quarterback Philip Nelson allegedly kicked Kolstad in the head. He remains hospitalized in critical condition after surgery. Shelley reportedly told authorities that Kolstad swung at him after punching Nelson. He claims he did not hit Kolstad or anyone else. Shelley could faces up to 20 years in prison on a first-and third-degree assault conviction.