Upon graduating from Kansai University where he played on the varsity team, Sasaki signed his first professional contract with the Blacktown Spartans of the National Premier Leagues in Australia.

[1] He made his debut on 24 January in a 2017 AFC Champions League qualifying play-off match against Sinaporean side Tampines Rovers.

[2] He scored his first goal for the club 5 April in a 2017 AFC Cup match against Indonesian side Johor Darul Ta'zim.

On 20 February 2018, Sasaki signed with Hong Kong Premier League club Rangers.

[5] On 8 April 2020, Sasaki agreed to a mutual termination with Pegasus after the club decided to cut costs due to the 2020 coronavirus pandemic and the subsequent suspension of the 2019–20 season.