is a former Japanese sprinter who specialised in the 400 metres.
His personal best time was 45.18 seconds, achieved in the 2003 National Sports Festival of Japan in Fukuroi. This is the current Japanese junior record.JAPAN National U20 Records JAAF (2016-06-20). Retrieved on 2016-06-20.
Personal bests EventTimeVenueDateNotes400 m 45.18 sFukuroi, Japan29 October 2003Japan's 5th-fastest time
Records 400 metres Current Japanese junior record holder - 45.18 s (Fukuroi, 29 October 2003) relay Current Japanese university record holder - 3:03.20 s (relay leg: 3rd) (İzmir, 20 August 2005)
with Kazunori Ōta, Yoshihiro Horigome, and Kenji Narisako
International competition record Representing 2002World Junior ChampionshipsKingston, Jamaica (h)400 m relay3:05.80 (relay leg: 3rd) AJRAsian Junior ChampionshipsBangkok, Thailand400 m relay3:07.51 (relay leg: 2nd)2003World ChampionshipsSaint-Denis, France relay3:03.15 (relay leg: 1st)Asian Championships Manila, Philippines400 m relay3:03.59 (relay leg: 1st)2004Olympic Games Athens, Greece (h)400 m relay3:00.99 (relay leg: 1st)2005Universiade İzmir, Turkey400 m relay3:03.20 (relay leg: 3rd) Asian ChampionshipsIncheon, South Korea400 m relay3:03.51 (relay leg: 1st)East Asian GamesMacau, China relay3:07.70 (relay leg: 1st)2006Asian Games Doha, Qatar400 m2007World ChampionshipsOsaka, Japan (h)400 m (h) relay3:02.76 (relay leg: 1st)
References
External links
Yūki Yamaguchi at JAAF