ATHENS - AUGUST 17: John Williams of the USA competes on Carrick in the team three day eventing cross country competition on August 17, 2004 during the Athens 2004 Summer Olympic Games at the Markopoulo Olympic Equestrian Centre Eventing Park in Athens, Greece. (Photo by Clive Mason/Getty Images)

ATHENS - AUGUST 17:  John Williams of the USA competes on Carrick in the team three day eventing cross country competition on August 17, 2004 during the Athens 2004 Summer Olympic Games at the Markopoulo Olympic Equestrian Centre Eventing Park in Athens, Greece. (Photo by Clive Mason/Getty Images)