Career
At the Biathlon World Championship 2007 in Antholz, Defrasne earned a bronze medal, in the 12.5 km pursuit and a silver medal in the Mixed Relay event. In 2009 at the World Championships in Pyeongchang, Defrasne was part of the victorious mixed relay team Defrasne served as the flagbearer for France at the 2010 Winter Olympics.
He retired from the sport after the 2009-2010 season.
All results are sourced from the International Biathlon Union. Olympic Games
3 medals (1 gold, 2 bronze)
*Mass start was added as an event in 2006.
World Championships
6 medals (2 gold, 1 silver, 3 bronze)
*During Olympic seasons competitions are only held for those events not included in the Olympic program **The mixed relay was added as an event in 2005.
Individual victories
3 victories (1 In, 1 Sp, 1 Pu).