in its inaugural season. Adelaide signed Marinoff for the 2018 season during the trade period in May 2017. Following the AFL Women's season, Marinoff played for in the VFL Women's (VFLW), also winning a premiership. She later played for The Allies in the inaugural AFL Women's State of Origin match on 2 September, where she was named among the Allies' best players with 13 disposals and five tackles. 2018 After an impressive start to the 2018 season, in round 4, Marinoff set a new record for tackles with 21 in her side's draw against Greater Western Sydney in heavy rain at Blacktown ISP Oval, breaking the record of 16 set by midfielder Sarah Hosking two weeks earlier. The effort also bested the existing men's league record of 19, thus setting the national senior-level record across men's and women's competitions for tackles. Marinoff was selected in afl.com.aus Team of the Week in rounds 3, 4, 5 and 7, and finished equal-fifth in the 2018 AFL Women's best and fairest count with six votes. She was also named in the initial 2018 AFL Women's All-Australian 40-woman squad. Marinoff again finished the season leading the competition in tackles (82) and average tackles per game (11.7); both statistics were better than her previous season and in less games (Marinoff played eight of eight possible games in 2017 and seven of seven possible games in 2018). Adelaide signed Marinoff for the 2019 season prior to the trading and signing period in May 2018 after she chose not to accept an offer from one of or . 2019 In round 3 of the 2019 season, Marinoff broke the league disposal record of 30 set by Emma Kearney in round 6 of the 2017 season, recording 33 disposals in Adelaide's win against at Norwood Oval (a record which was later broken by teammate Anne Hatchard in 2020), and was selected in womens.afls Team of the Week in rounds 1, 3 and 6. Marinoff went on to play in Adelaide's second premiership, when they defeated Carlton by 45 points in front of a record AFL Women's crowd at Adelaide Oval, and was named among their best players. She was also named in the 2019 AFL Women's All-Australian team, her second All-Australian selection, and finished equal-fourth in the 2019 AFL Women's best and fairest count with seven votes. Marinoff finished the season leading the competition in kicks (130), disposals