is a Japanese race walker.
Yamazaki began to participate in race walking at high school, and competed at the World Junior championships in his junior year.
At the Osaka World Championships in 2007, he was in contention in the 50 km race until he was misdirected by officials and disqualified for entering the stadium without completing the full course. If he had finished in the top eight, he would have qualified for the 2008 Summer Olympics. He managed to qualify for the 2008 Olympics after setting a new Japanese record at the Japanese national championships.
International competitions 2000World Junior ChampionshipsSantiago, Chile20th10,000m walk45:19.212002World Junior ChampionshipsKingston, Jamaica5th10,000 m42:02.762003Asian ChampionshipsManila, Philippines 2nd20 km1:21:542004Olympic Games Athens, Greece —20 km16th50 km3:57:002005World ChampionshipsHelsinki, Finland8th50 km3:51:152007World ChampionshipsOsaka, Japan —50 km2008Olympic GamesBeijing, China11th20 km1:21:187th50 km3:45:472009World ChampionshipsBerlin, Germany —50 km2010World Race Walking CupChihuahua, Mexico6th50 km3:55:442012World Race Walking CupSaransk, Russia25th20 km1:23:19Olympic GamesLondon, United Kingdom –50 km2015World Championships Beijing, China34th50 km4:03:54
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