The Georgian goalkeeper is in contention for the prize for his 19th-minute intervention in Liverpool's 2-0 win over Aston Villa at Anfield.
Mamardashvili leapt to push a deflected Matty Cash strike onto the woodwork and behind for a corner, with the scoreline goalless at that stage.
It is one of six saves on this month's shortlist, and you can vote for the No.25 to win here.
