Kammala jumla mai zuwa: An haifi Saeki ne a Okayama Prefecture, kuma a 2005 ya lashe tagulla a gasar zakarun Asiya ta matasa. A cikin 2013, ya lashe taken maza biyu a gasar Austrian International Challenge, kuma a wannan shekarar, ya lashe tagulla a maza biyu a gasar
Wasannin Asiya ta Gabas na 2013. Ya kuma taimaka wa ƙungiyar maza ta Japan ta lashe azurfa a Gasar Zakarun Asiya ta 2016. Saeki ya buga wa kungiyar Unisys wasa tsawon shekaru bakwai, kuma a watan Maris na shekarar 2017, ya sanar da yin ritaya.