Rok Možič is considered one of the most promising volleyball players in the world. He is a member of the Slovenian national volleyball team. Rok has won 8 national championship titles with his team since the age of eleven. With the member team VC Maribor, he won the fourth place in the country in the 2019/2020 season, and at the same time he was declared the best player after regular work with the most points. In the next season 2020/2021 he won the title of national champions with VC Merkur Maribor and after 28 years brought the champion cup back to Maribor. It was Rok who was the key player who accomplished this achievement. Before him, his father Peter Možič won the title in Maribor with the team. In 2021, RM9 signed a contract with Italian first division club Verona Volley. He finished season 2021/2022 as the TOP scorer of the Italian league (winner of the Andrej Kuznetsov award). He also took first place in the special ranking related to the highest number of winning attacks during the entire championship.
In beach volleyball, Rok became the European runner-up under 18, and in 2021 he became the European champion in the under-20 category with Rok Bračko in Izmir. Rok has won a total of 12 national championship titles in beach volleyball (all titles since the age of thirteen). In 2019, Rok became the most promising athlete in the city of Maribor for the first time. In 2021, he became the most promising sports personality of the year in Slovenia.
RM9 is a member of the Slovenian national volleyball team. He was in the national team in all junior selections. With the cadet national team, they became Central European champions. He was the first member of the national team to draw attention to himself in 2021 in the League of Nations. In the same year, he was looking forward to a silver medal at the European Championship with the Slovenian national team. He won a bronze medal with the Slovenian national team at the European Championship 2023. With 152 points he was the best scorer of the whole European Championship 2023.
Rok participates every year in the summer volleyball camp in Selnica ob Dravi. Together with his father Peter Možič, who is a former professional volleyball player, they help young people to gain new skills.