[1] He skated with Jade Marchal for at least five seasons, winning the French national novice title in March 2015.

[5] Making their Grand Prix debut at the 2021 Internationaux de France, they finished ninth among ten teams.

[6] After winning the bronze medal at their first senior French nationals, Demougeot/Le Mercier made their debut at the European Championships, finishing sixteenth.

[5] Speaking after the latter, an enthused Le Mercier said: "if someone would have told us before the Grand Prix season that we would end up with fourth place, we wouldn't have believed it.

"[10] Demougeot/Le Mercier won their second consecutive French national silver medal before competing at the 2024 European Championships in Kaunas, Lithuania.

[12] At the 2024 World Championships in Montreal, Demougeot/Le Mercier finished eleventh in the rhythm dance with another new personal best score.

[14] Demougeot and Le Mercier began the season by winning bronze at the 2024 Master's de Patinage.