Marinković went through the youth ranks of KK Crvena zvezda and made a couple of first team appearances during the 2010–11 Adriatic League.

In September 2011, he joined KK Partizan, a club where he made his first basketball steps.

[2] On 27 August 2012 he was loaned to OKK Beograd till the end of the season.

[13] Marinković was a member of the Serbian U20 team that reached semifinals on the 2012 European Under-20 Championship.

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