He even managed to win the national championship with his club Dubrava but was forced to retire due to back and knee injuries.

He beat Jozsef Zsigmund in the first round, Fargan Omarov in the quarterfinals and Joseph Parker in the semifinals to earn a place in the tournament finals, where he faced Tony Yoka.

Despite scoring stoppage victories over Nikita Maculevics and Kaspar Vaha in the preliminary rounds, he would lose by decision to Magomed Omarov in the quarterfinals.

He won the gold medal by beating Pero Konsuo in the quarterfinal, Josip Granic in the semifinal and Ivan Andrasic in the finals.

Victories over Dean Gardiner, Mikheil Bakhtidze and Mihai Nistor earned Hrgović a place in the finals, where he was to fight Florian Schulz.

After beating Ali Eren Demirezen by unanimous decision, Hrgović was scheduled to fight Lenier Pero in the quarterfinals.

[24] On 30 September 2017, Hrgović started his professional career with a first-round stoppage victory over Raphael Zumbano of Brazil.

[27] The fight was evenly contested for the majority of the first round, until Hrgović landed a flurry 30 seconds before the end, knocking out Sour with a right hook.

[28] Hrgović was scheduled to fight the Tom Little, who was on a three-fight winning streak, on the undercard of the World Boxing Super Series semi-final clash between Oleksandr Usyk and Mairis Briedis.

[30] Hrgović was expected to face Sean Turner, at the time the #46 ranked heavyweight according to Boxrec, on the undercard of the WBSS semifinal bout contested by Callum Smith and Nieky Holzken.

[36] In the first round, Hrgović utilized half-feints and jabs to pressure his opponent back, relying on his height and length to insulate him from Mansour's lunges.

After the break, the fight continued in the previous tempo, with Hrgović achieving a technical knockout win after knocking Mansour down twice in the third round.

[37] Hrgović was expected to make the first defense of his secondary title against Ytalo Perea on December 8, 2018, at the Dražen Petrović Basketball Hall in Zagreb, Croatia.

[38] Perea was forced to withdraw two days prior to the bout due to travel visa issues, and was replaced by the one-time WBC heavyweight title challenger Kevin Johnson.

[40] Hrgović was scheduled to make his second title defense against the 15-1 Gregory Corbin on May 25, 2019 at the MGM National Harbor in Oxon Hill.

Heredia attempted to adjust by landing a number of body shots in the second round, which failed to stop the forward movement of Hrgović.

[46] On 7 December 2019, on the undercard of Ruiz Jr. vs. Joshua II, Hrgović, then ranked #9 by the WBA and IBF, and #11 by the WBC, had what is perhaps his most notable win to date, a third-round knockout against Éric Molina.

[50] Hrgović justified his role as the betting favorite, pressuring Kartozia throughout the fight, and knocking him out with a left-right combination at the 1:07 minute mark.

[51] Two months after his victory over Kartozia, Hrgović was scheduled to fight Rydell Booker for the vacant IBF International Heavyweight title o November 7, 2020, at the Seminole Hard Rock Hotel & Casino, in Hollywood, Florida, in his return to the United States.

[61] As the Hunter fight failed to pan out, Hrgović was instead scheduled to defend his IBF International Heavyweight Title against the undefeated Marko Radonjic on September 10, 2021, at Wörthersee Stadion in Klagenfurt, Austria.

The IBF then invited the next highest ranked heavyweight contender, Joseph Parker, to enter talks for a title eliminator bout.

[75] On February 7, it was revealed that the #13 ranked Chinese heavyweight Zhilei Zhang had accepted the invitation to enter into negotiations with Hrgović.

[82] Hrgović was knocked down with a check right hook in the back of the head, which is formally prohibited, in the last thirty seconds of the opening round and appeared to struggle with Zhang's power in the early parts of the fight.

[86] On November 13, 2022, the IBF formally ordered their heavyweight champion Oleksandr Usyk to enter into negotiations with Hrgović, who was at the time the mandatory challenger for the title.

[87] Matchroom and Wasserman Boxing later confirmed that Hrgović opted to forgo the negotiation period and head straight to a purse bid.

[88] The IBF rescinded their order on January 9, 2023, as they recognized that the WBA was next in the “rotation” for a mandatory title defense, with the stipulation that the winner would face Hrgović within 180 days.

[98] Hrgović faced Mark de Mori in a stay-busy fight on the undercard of Anthony Joshua vs. Otto Wallin, on December 23, 2023 at the Kingdom Arena in Riyadh, Saudi Arabia.

[101] During an appearance at the Ariel Helwani, Saudi adviser at the Royal Court under the rank of Minister Turki Al-Sheikh made a public offer to Hrgović to fight one of six possible opponents: Daniel Dubois, Martin Bakole, Frank Sanchez, Jarrell Miller, Agit Kabayel and Jared Anderson.