Sasaki was born in Zama on October 2, 1989. After graduating from Kanagawa University, he joined J2 League club Ventforet Kofu in 2012. He played many matches as left side back from first season. Ventforet also was promoted to J1 League end of the 2012 season. In 2015, he moved to Sanfrecce Hiroshima. He played many matches and Sanfrecce won the J1 champions in 2015. Although he could hardly play in the match for injury in 2016 and 2017, He became a regular player from 2018.