In the adult category, Plantić was Croatian middleweight champion in 2015, 2016 and 2017 and Croatian light heavyweight champion in 2020 and 2021.[6] in April 2016, he was eliminated in the preliminary round of the European Olympic qualification in Samsun against Arjon Kajoshi,[7] and lost in the quarter-finals of the U22 European Championships in Brăila against Viktor Daschkewitsch in March 2017.[8] In 2019, he won the Balkan Championships in Antalya.[9]
In the European Olympic qualification in London in March 2020, Plantić defeated Umar Jambekov before the tournament was interrupted due to the COVID-19 pandemic.[10] In the continuation of the qualification in Paris in June 2021, he defeated Gor Nersesyan and Emmet Brennan, before he was narrowly defeated by Benjamin Whittaker 2-3 in the semifinals and thus qualified for the 2020 Summer Olympics in Tokyo.[11]
Professional boxing career
Plantić made his professional debut against Moris Markowitsch on 17 March 2018.[12] He won the fight by a fifth-round knockout.[13] His next professional bout came four years later, as he was booked to face Geard Ajetovic on 19 February 2022.[14] Ajetovic retired from the fight at the end of the third round.[15] Plantić made a step-up against the experienced Ryno Liebenberg on 1 September 2022.[16] He won the fight by a fourth-round knockout, flooring Liebenberg with an uppercut.[17]
Plantić faced the multiple-time world title challenger Khoren Gevor for the vacant WBC International Silver super middleweight title on 17 December 2022, at the Sportska Dvorana Bilankusa in Solin, Croatia.[18] He won the fight by unanimous decision, with scores of 97–93, 100–90 and 99–92.[19]
