Dutch athlete Maureen Koster was hospitalized after being knocked unconscious and suffering a “mild concussion” during the 3,000m final at the European Indoor Championships in Apeldoorn ...

Koster, a two-time Olympian, fell after being tripped by other runners around the 1,000m mark of the race. Replays showed the 32-year-old tumbling to the floor before her head bounced off the track.