[5] He won the gold medal in the men's 73 kg event at the 2023 World Judo Championships held in Doha, Qatar.

In 2021, Stump won one of the bronze medals in the men's 73 kg event at the European Judo Championships held in Lisbon, Portugal.

In July 2021, he competed in the men's 73 kg event at the 2020 Summer Olympics in Tokyo, Japan where he was eliminated in his first match.

[11][12] Stump won the gold medal in the men's 73 kg event at the 2023 World Judo Championships held in Doha, Qatar.

[6] He won one of the bronze medals in the men's 73 kg event at the 2024 World Judo Championships held in Abu Dhabi, United Arab Emirates.