Koji Murofushi

is a Japanese athlete. He is best known as a hammer thrower who took part in four Summer Olympic Games. 
Early life.
Murofushi was born in Numazu, Shizuoka Prefecture. His family were international sports competitors. His early interest in the hammer was encouarged by his father, Shigenobu Murofushi, who is an Olympic athlete and Asian Games champion. He is the brother of Yuka Murofushi, who is also an Olympian. 
Career.
Murofushi won the gold medal in the hammer throw at the 2004 Summer Olympics in Athens.
He won the bronze medal at the 2012 Summer Olympics in London.