Marshawn Kneeland’s death highlights the importance of mental health resources for NFL players CTV NewsMarshawn Kneeland sent goodbye text message before his death, Plano police dispatch audio reveals CBS NewsDak Prescott, Cowboys teammates mourn loss of Marshawn Kneeland Dallas Cowboys | Official Site of the Dallas CowboysCowboys’ Kneeland dies in apparent suicide at 24 ESPNMarshawn Kneeland cause of death: What we know about passing of Cowboys DE USA Today