His personal best is 45.49 in 2005. Essor was also a representative for Jamaica at the 2008 Summer Olympic in Beijing, on the 4x400m team. A successful NCAA college athlete, Essor was a 7-time All-American and 4-Time National Champion while attending Abilene Christian University in Abilene, Texas. He was the 2005 NCAA Division II Indoor and Outdoor 400m Champion.