He won the gold medal in the 87 kg event at the 2023 World Wrestling Championships held in Belgrade, Serbia.

He reached the semi-final stage, in which he lost to Zurab Datunashvili,[4] and subsequently won the bronze match against Alex Bjurberg Kessidis.

[5][6] He won the silver medal at the 2023 World Wrestling Championships in Belgrade, Serbia, losing 8-7 to his Turkish rival Ali Cengiz in the men's Greco-Roman style 87 kilo final match.

On 15 November 2023, the United World Wrestling recognized that a serious refereeing mistake had been committed which changed the outcome of this bout.

[7] Dávid Losonczi defeated Kyrgyz Azat Salidinov 8-0 with a technical superiority in the second round, Azerbaijan's Islam Abbasov 8-0 with a technical superiority in the third round, and in the quarter-finals he defeated Belarusian Kiril Maskevic 6-1, who participated as an independent individual athlete, to reach the semi-finals.