Three-time Olympian Jenny Simpson in hospital after collapsing at track event

US runner reportedly lost pulse in medical incidentOrganizer thanks EMS and safety professionalsSimpson won bronze in 1500m at 2016 OlympicsJenny Simpson, a three-time Olympian and one of the most accomplished American female runners in history, was taken to hospital and is receiving treatment after collapsing at a track event on Tuesday in North Carolina.The organizer of the event, Sir Walter Running, said there had been a medical incident involving Simpson while she paced a mile group at an ev...