An orang-utan raises his arm after knocking out his fellow primate in a kickboxing match in Bangkok. Many of the apes in such events are imported illegally.
Runners do push-ups before the fifth annual Santa Speedo Run in downtown Boston, Massachusetts. Several hundred runners in bathing suits participated in the event which raises money for charity.
Namibian Manfred Geinub plays a shot on a roadside desert golf track in Walvis Bay, Namibia. The nine-hole course dubbed the 'West Side Club' has no greens, tees, water or grass.
An athlete runs through flames as he competes in the Tough Guy Event in Preston, England, a biannual charity race designed to test physical and mental endurance on an obstacle course known as the Killing Fields.
Workers dry the court in Arthur Ashe Stadium at the 2003 U.S. Open in Flushing Meadow, New York, after three days of delays due to rain.
