Rio Noguchi

is a Japanese professional tennis player. He has a career high ATP singles ranking of No. 196 achieved on 18 August 2025 and a doubles ranking of No. 177 achieved on 5 May 2025.

Career

2022-2025: ATP debut, first ATP 500 win, Top 200 Noguchi made his ATP main draw debut at the 2022 Rakuten Japan Open Tennis Championships after qualifying for the singles main draw, defeating Tatsuma Ito and Yusuke Takahashi to qualify. He won his first ATP and ATP 500 level match defeating fellow qualifier Ramkumar Ramanathan. He lost to Denis Shapovalov in the second round. As a result, he climbed 75 positions up the rankings into the top 250 on 17 October 2022.

Performance timeline

Singles

ATP Challenger Tour finals

Singles: 5 (3 titles, 2 runner-ups) LegendATP Challenger Tour (3–2)

Doubles: 6 (3 titles, 3 runner-ups) LegendATP Challenger Tour (3–3)

ITF Futures/World Tennis Tour finals

Singles: 17 (8 titles, 9 runner-ups) LegendITF Futures/WTT (8–9)Finals by surfaceHard (7–6)Clay (0–1)Grass (0–2)Carpet (1–0)

Doubles: 15 (7 titles, 8 runner-ups) LegendITF Futures/WTT (7–8)Finals by surfaceHard (4–5)Clay (3–1)Grass (0–0)Carpet (0–2)