Gerri Martin Milliam Mandagi (born 12 June 1988) is an Indonesian professional footballer who plays as a goalkeeper for Indonesian club Persibo Bojonegoro.
Gerri Mandagi was signed for Mitra Kukar to play in Indonesia Soccer Championship A in 2016.
He quickly rose as the team's starting goalkeeper, appearing in 40 matches in four seasons.
[3] Mandagi in 2020 signed for Persipura Jayapura to play in Liga 1 in the 2020 season.
[4] Mandagi made his league debut on 28 August 2021 in a match against Persita Tangerang at the Pakansari Stadium, Cibinong.