Kotsoiev won the gold medal in the men's 100 kg event at the
2017 Summer Universiade held in Taipei, Taiwan. Kotsoiev won one of the bronze medals in the
men's 100 kg event at the
2020 European Championships held in Prague, Czech Republic. Kotsoiev won the silver medal in his event at the
2021 World Masters held in Doha, Qatar. A few months later, he won the gold medal in his event at the
2021 Antalya Grand Slam held in Antalya, Turkey. Kotsoiev won one of the bronze medals in his event at the
2022 Tel Aviv Grand Slam held in Tel Aviv, Israel. In February-March 2026, at the Grand Slam tournament competitions held in the capital of Uzbekistan, Tashkent, Zelim Kotsoev (100 kg) took third place, defeating his Russian opponent Adam Sangariev by ippon. As of April 1, 2026, with a score of 440 points, holds third place in the ranking of Azerbaijani athletes according to the
Ministry of Youth and Sports. ==Achievements==