On 14 October 2017, in an ABA League away game versus Zadar in a 104–97, Marinković scored a career-high 33 points, also adding 5 rebounds and 1 assist. Over 20 games of the 2017–18 ABA League, he averaged 11.3 points, 2.9 rebounds and 1.2 assists per game, while shooting 41.3% from the field and 36.1% from the three-point field goal.
