By winning his gold medal, Saei ensured that Iran was leaving Beijing with a better result than their poor showing at the 1948 Summer Olympics in London, where they received only one bronze medal. Full results of Iran's medals in the history of the Summer Olympic games can be found in the 'Medal tables' in Iran at the Olympics.
Saei officially ended his career as a Tae Kwon Do athlete on November 8, 2008 (18 Aban 1387).
He has been practicing Tae Kwon Do since he was six years old. Having previously competed in Lightweight (67–72 kg), he is the 1999 World Champion and 2003 World Championship silver medalist. When the Iranian town of Bam was devastated in the 2003 earthquake, Saei put his medals on auction to raise money for the victims.
Hadi Saei starring in the TV series Amin directed by Manuchehr Hadi in 2015.