A former junior champion, Riku has seamlessly transitioned into the professional ranks and continues to make his mark on the World Nineball Tour. He impressed with a run to the Last 16 at the 2023 UK Open, showcasing his growing maturity on the big stage. That performance was followed by solid showings at the 2023 Spanish Open and the 2025 European Open, where he reached the Last 64 in both events.