Photograph: Winslow Townson/USA Today SportsMarathonBoston Marathon: Kenya's Geoffrey Kirui, Edna Ki. ”“What may undo him are the mental and emotional factors, both his ability to control that fierce competitiveness as well as how much it burns him out mentally. The conflict escalated until the younger man struck the victim in the head with a screwdriver, the officers said. It was simply a good shot from the youth international, who is on loan in Salt Lake City from Liverpool.