The 27-year-old two-time world champion posted a 93.3 in his first ride and watched as the other eight riders failed to catch him.
Erwann le Pechoux, Julien Mertine and Enzo Lefort combined to best Anton Borodachev, Kirill Borodachev and Timur Safin 45-28 for France’s second fencing gold of the Tokyo Olympics.
Marit Bouwmeester of the Netherlands had to return to the start at the beginning of the race, but managed to win bronze.
Capping a brilliant performance by the entire Aussie women’s team, Emma McKeon followed her victory in the 50-freestyle earlier in the session to take the butterfly leg on the relay.
He was a long-jump specialist for years, and his biggest major success was an indoor 60-meter win at European champions.