When SFA football coach Colby Carthel couldn’t be on the sideline for his team’s upcoming game, he turned to his father, Don, who left his tractor to return to the gridiron and lead the Lumberjacks to a win.When SFA football coach Colby Carthel couldn’t be on the sideline for his team’s upcoming game, he turned to his father, Don, who left his tractor to return to the gridiron and lead the Lumberjacks to a win.