In the same year, he won one of the bronze medals in the men's 81 kg event at the 2019 Summer Universiade held in Naples, Italy.

He is also the gold medalist in the men's 81 kg event at the 2020 European Judo Championships held in Prague, Czech Republic.

[6][7] In 2021, Grigalashvili won the gold medal in his event at the Judo World Masters held in Doha, Qatar.

[8][9] He won the silver medal in the men's 81 kg event at the 2021 World Judo Championships held in Budapest, Hungary.

He won the gold medal in the men's 81 kg event at the 2022 European Judo Championships held in Sofia, Bulgaria.