Marin Andrei started his senior career playing for Metalul Târgoviște in Divizia B and after two seasons he managed to promote to Divizia A, a competition where he made his debut on 20 August 1961 in a 3–1 victory against UTA Arad.[1] After one Divizia A season with Metalul he went to play under the guidance of coach Valentin Stănescu at Rapid București.[4] Andrei was an important player in the first three seasons spent with The Railwaymen as the team managed to be runner-up in all three years, also in the 1964–65 Divizia A season he set a competition record for goalkeepers of 770 minutes without receiving a goal.[1][4][5][6] In the 1966–67 Divizia A season he helped Rapid win the first title in the club's history, playing only three games, as the team's first choice for the goalkeeper position was Rică Răducanu.[1][4][5][7] The next season, Andrei played four games in the league, after which he went to play for one season at Steaua București, where he made eight league appearances, having a hard competition with international goalkeepers Carol Haidu and Vasile Suciu, also managing to win the Cupa României.[1][5][8] He went to play for Progresul București in the second league for a half of year, after which he signed with Dinamo București, thus becoming the first player to play for Rapid, Steaua and Dinamo.[1][4][5] He won the 1970–71 Divizia A title with Dinamo in which he played four games, as the team's first choice for the goalkeeper position was Mircea Constantinescu.[1][7] Also he made three appearances for the club in the 1971–72 European Cup, helping the club pass Spartak Trnava in the first round, keeping a clean sheet in the first leg but they got eliminated in the following round by Feyenoord.[1][9][10] Marin Andrei ended his career after playing one season in the second league for Chimia Râmnicu Vâlcea with whom he won the Cupa României.[1][8]
^"Acum 50 de ani ne băteam cu cei mari" [50 years ago we were fighting with the big ones] (in Romanian). Welovesport.ro. 6 March 2022. Retrieved 28 August 2024.