Casper Ruud is a Norwegian professional tennis player. He has been ranked as high as world No. 2 in men's singles by the Association of Tennis Professionals (ATP), achieved in September 2022, making him the highest-ranked Norwegian in history. Ruud has won 14 ATP Tour singles titles, including a Masters 1000 event at the 2025 Madrid Open, and finished runner-up at three singles majors and at the 2022 ATP Finals.