The men's decathlon, one of the most grueling, endurance-intensive Olympic competitions, is set to begin tomorrow.
The competition happens over the span of two days, during which athletes compete in ten activities, ranging from the 100-meter sprint, to the long jump and the discus.
During the U.S. trials last month, American Ashton Eaton broke the decathlon world record, earning 9,039 points. Eaton is favored to also win tomorrow's competition.
Until Eaton's record-setting performance, Dan O'Brien held the American record in the decathlon for twenty years. O'Brien also won three consecutive world titles and a gold medal at the 1996 Olympic Games.
O'Brien joins Starting Point this morning to explain how he felt when Eaton broke his record and to weigh in on the upcoming competition.