Daniel Dion started training for Olympic and world championships on the Palouse with Mike Keller, who was the coach of Idaho's track. After training, he competed at the U.S. Olympic Trials in 1988 for 100-meter race although he performed well in running, he got injured in the long jump.
Once he O'Brien was announced as the world's greatest athlete. Although he was a failure during the U.S. Olympic Trials in the eighth event, the pole vault.
Later Daniel made a world record of 8,891 points in early September in Talence, France, where he titled following 100 meters race in 10.43 seconds, Long Jump 26 ft, High Jump 6 ft, 400 meter race in 48.51 seconds, for first day and for second day 110 Meter High Hurdles in 13.98 seconds, Discus 159 ft 4 inches Pole Vault 16 ft,Javelin 205 ft 4, and 1,500 meter run in 4 minutes 42.10 seconds.
Looking at his personal life, O'Brien married Jessica St. Clair on 15th July 2006 after dating her for a long time. The couple blessed with a daughter Isobel Kelly who is now three years old.
Being an Athlete, Daniel had played various Olympic games from which he collects a big chunk of money, however, the exact figure of his net worth is yet to disclosed and is under review.