Education
His first global appearance was at the 2004 Summer Olympics and he finished 18th overall in the final rankings. The 2005 World Championships in Athletics was his next major tournament but he finished in 27th place with a disappointing throw of 68.31 m.
Career
He established himself as one of Asia"s top throwers in the following years, winning silver medals at the 2001 East Asian Games, 2002 Asian Games, and the 2003 Asian Athletics Championships. He was runner-up for a second time at the 2006 Asian Games and took part in the 2008 Summer Olympics two years later. Murakami was voted the Japanese athlete of the year for 2009 by both Rikujyo Kyougi Magazine (Track and Field Magazine of Japan) and the Japan Association of Athletics Federations.
He finished the year with a gold medal performance at the 2009 Asian Athletics Championships.
He extended his consecutive national title run to eleven in June, out-throwing Nobuhiro Sato by four metres. On April 29, 2013, he extended his personal best by more than 2 meters to 85.96, more than 1 meter longer than London Olympic winning throw, and 2nd best by a Japanese javelin thrower after Kazuhiro Mizoguchi.
1997 - 76.54
1998 - 73.62
1999 - 71.70
2000 - 78.57
2001 - 80.59
2002 - 78.77
2003 - 78.98
2004 - 81.71
2005 - 79.79
2006 - 78.54
2007 - 79.85
2008 - 79.71
2009 - 83.10
2010 - 83.15
2011 - 83.53
2012 - 83.95
2013 - 85.96
2014 - 81.66
2015 - 79.05.