|Date||6 August 2021|
|Location||Nippon Budokan, Chiyoda, Tokyo|
|Participants||10 from 10 countries|
Competitors were divided into two round-robin pools with the top two competitors advancing to semi-finals and final. Luigi Busa (ITA) was world ranked #1, although he was competing against 5 time World Champion Rafael Aghayev (AZE).
Pool A saw the top four competitors separated by just one point with the top two, Gábor Hárspataki (HUN) and Stanislav Horuna (UKR) being the two successful qualifiers. In pool B, Aghayev secured his qualification by winning his first three bouts. Needing a win to advance, Busa defeated Aghayev by 3-1 (a yuko and waza-ari against a yuko) in his last contest, securing his place in the semi-finals.
The first semi-final resulted in a comfortable win for Aghayev. With an early ippon, he further scored throughout the contest to win by 7-0 over Hárspataki. Busa was in control of his contest with Horuna, scoring yukos at regular intervals to win by 3-0. The final was a tense match, the only score being a yuko scored by Busa after 1:42, to win the gold medal by 1-0.