A Saint Peter man has been sentenced to five months in jail for a street attack two years ago that left former Minnesota State Mankato football player Isaac Kolstad with severe brain injuries. 23-year-old Trevor Shelley pleaded guilty in March, just before his jury trial was to begin, for punching Kolstad in the head during a fight. Shelley’s attorney said there will probably not be a day in the rest of his client’s life that he won’t be thinking about what happened. The Kolstad family’s attorney says his clients are disappointed with the outcome and lawsuits are under way.