In 2019, Fullerton, Tore Bjarnarson and Christoffer Berg won the silver medal in the cadet men's team compound event at the World Archery Youth Championships held in Madrid, Spain.

[7] Fullerton and Tanja Gellenthien won the silver medal in the mixed team compound event at the 2023 European Games held in Poland.

[1] Fullerton, Tore Bjarnarson and Rasmus Bramsen won the gold medal in the men's team compound event at the 2023 World Archery Youth Championships held in Limerick, Ireland.

[9] In the same year, Fullerton, Martin Damsbo and Tore Bjarnarson won the silver medal in the men's team compound event at the 2023 World Archery Championships held in Berlin, Germany.

[11] In the same month, Fullerton, Martin Damsbo and Tore Bjarnarson won the gold medal in the men's team compound event at the 2024 European Indoor Archery Championships held in Varaždin, Croatia.