| Challenger Nonthaburi | 01/16 04:00 | 28 |
[246] Rio Noguchi v
Maximus Jones
[378] |
6-4,1-6,2-6 | |
| Challenger Nonthaburi | 01/15 03:30 | 27 |
[246] Rio Noguchi v
Marek Gengel
[351]
|
4-6,7-6,7-5 | |
| Challenger Nonthaburi | 01/14 04:50 | 26 |
[246] Rio Noguchi v
Sumit Nagal
[279]
|
Retired | |
| Challenger Nonthaburi | 01/13 03:00 | 25 |
[246] Rio Noguchi v
Stefanos Sakellaridis
[282]
|
6-4,6-2 | |
| Challenger Nonthaburi | 01/10 04:00 | 29 |
[415] Marek Gengel
v
Rio Noguchi [227]
|
3-6,4-6 | |
| Challenger Nonthaburi | 01/09 04:00 | 28 |
[227] Rio Noguchi v
Joel Schwaerzler
[254]
|
6-2,6-2 | |
| Challenger Nonthaburi | 01/08 03:30 | 27 |
[286] Marat Sharipov
v
Rio Noguchi [227]
|
4-6,4-6 | |
| Challenger Nonthaburi | 01/07 03:00 | 26 |
[379] Tung-Lin Wu
v
Rio Noguchi [227]
|
6-3,2-6,4-6 | |
| Challenger Nonthaburi | 01/05 07:00 | 25 |
[357] Sanhui Shin
v
Rio Noguchi [227]
|
1-6,4-6 | |
| Challenger Playford | 11/27 23:30 | 27 |
[87] James Duckworth
v
Rio Noguchi [241]
|
7-6,6-2 | |
| Challenger Playford | 11/26 04:25 | 26 |
[471] Hiroki Moriya
v
Rio Noguchi [241]
|
4-6,4-6 | |
| Challenger Playford | 11/24 02:45 | 25 |
[461] Jake Delaney
v
Rio Noguchi [242]
|
2-6,4-6 | |
| Challenger Sydney | 11/17 03:15 | 25 |
Rio Noguchi v
Tai Sach
|
6-2,1-6,2-6 | |
| Challenger Brisbane | 11/11 00:00 | 25 |
[240] Rio Noguchi v
Jake Delaney
[361]
|
2-6,6-7 | |
| Challenger Matsuyama | 11/07 02:00 | 27 |
[167] SSV Vorsfelde
v
Rio Noguchi [246]
|
7-5,4-6,6-3 | |
| Challenger Matsuyama | 11/05 03:30 | 26 |
[465] Philip Sekulic
v
Rio Noguchi [246]
|
2-6,6-7 | |
| Challenger Matsuyama | 11/04 01:00 | 25 |
[424] Yusuke Takahashi
v
Rio Noguchi [246]
|
5-7,4-6 | |
| Challenger Seoul | 10/29 02:00 | 26 |
[252] Rio Noguchi v
Sho Shimabukuro
[193]
|
4-6,3-6 | |
| Challenger Seoul | 10/27 06:40 | 25 |
[112] James Duckworth
v
Rio Noguchi [252]
|
6-1,5-7,3-6 | |
| Challenger Shenzhen | 10/15 05:30 | 25 |
[246] Rio Noguchi v
Kaichi Uchida
[368] |
7-5,4-6,3-6 | |
| Challenger Jinan | 10/06 04:35 | 14 |
[219] Rio Noguchi v
Sergey Fomin
[492] |
7-6,4-6,6-7 | |
| ATP Shanghai | 09/29 12:15 | 14 |
[157] Yoshihito Nishioka
v
Rio Noguchi [209]
|
6-3,6-2 | |
| ATP Tokyo | 09/22 03:50 | 14 |
[72] Juan Manuel Cerundolo
v
Rio Noguchi [214]
|
6-3,6-2 | |
| Challenger Shanghai | 09/05 09:00 | 27 |
[225] Yasutaka Uchiyama
v
Rio Noguchi [219]
|
5-7,6-2,6-4 | |
| Challenger Shanghai | 09/04 09:25 | 26 |
[230] Oliver Crawford
v
Rio Noguchi [219]
|
4-6,6-1,4-6 | |
| Challenger Shanghai | 09/03 07:15 | 25 |
[219] Rio Noguchi v
Yosuke Watanuki
[148]
|
6-4,7-5 | |
| Challenger Zhangjiagang | 08/28 08:00 | 26 |
[180] Kaichi Uchida
v
Rio Noguchi [219]
|
6-1,7-6 | |
| Challenger Zhangjiagang | 08/26 14:00 | 25 |
Linang Xiao
v
Rio Noguchi
|
6-7,1-6 | |
| US Open | 08/19 15:00 | 14 |
[118] Jaime Faria
v
Rio Noguchi [196]
|
3-6,6-4,6-3 | |
| Challenger Cancun | 08/14 23:00 | 26 |
[210] Rio Noguchi v
Stan Wawrinka
[152]
|
3-6,4-6 |
Rio Noguchi (野口莉央, Noguchi Rio; born 28 December 1998) 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.
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.