In international competitions, he made his debut in 2011 at the World Cup Championships in the Swedish Tursbyu where in a relay race won silver.
The IBU Cup debuted in the 2010/2011 season at the final stage in the French Anci.
After a successful European Championship 2015 (bronze in the sprint) Antonin debut in the World Cup in the Nove-Mesto-na-Morave. Already in the second race Hihonna managed to score the first cup points.
Season 2015/2016 has played with varying success, while being in the main team at the World Cup (the best result is the 31st place in the race race at the stage in Ruhpolding), then at the IBU Cup, where he won his first personal race - the sprint at the stage in the Italian Val Martello.
Season 2016/2017 spent on the IBU Cup, after which it took the 3rd place. At the World Cup run just two races (best result - 32th place in the race during the persecution in Oberhof).
Season 2017/2018 started at the IBU Cup. After two victories (IBU cup) in the second stage in Switzerland, Lentzerhayde was called into the main national team. In his first race after returning to the World Cup on stage in the French Ansi, he became the 3rd in the sprint. At the stage in Ruhpolding again climbed to the podium, finishing third in the mass start.