He won the gold medal in the men's kumite 60 kg event at the 2023 World Karate Championships held in Budapest, Hungary.

In May 2021, Xenos won one of the bronze medals in the men's kumite 60 kg event at the European Karate Championships held in Poreč, Croatia.

[4] In that same year, Xenos also competed in the men's 60 kg event at the 2021 World Karate Championships held in Dubai, United Arab Emirates.

[7] A few months later, Xenos won the gold medal in the men's 60 kg event at the 2023 World Karate Championships held in Budapest, Hungary.

[2][8] Xenos won the gold medal in the men's 60 kg event at the 2024 European Karate Championships held in Zadar, Croatia.