San Miguel de Tucuman 
Abidjan 2 
Gwangju Challenger 
Davis Сup Group I Tennis. Played Osaka Naomi. Season 2021
Country 
Japan. Ranking WTA 56.
Japan. Ranking WTA 56. WTA - US Open | ||||
|---|---|---|---|---|
| 04.09.2021 | Third round | Fernandez Leylah Annie — Osaka Naomi | 2:1 (5:7, 7:6, 6:4) |
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| 31.08.2021 | First round | Osaka Naomi — Bouzkova Marie | 2:0 (6:4, 6:1) |
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| WTA - Western-Southern Financial Group Women''s Open - | ||||
| 20.08.2021 | Third round | Teichmann Jil — Osaka Naomi | 2:1 (3:6, 6:3, 6:3) |
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| 18.08.2021 | Second round | Gauff Cori — Osaka Naomi | 1:2 (6:4, 3:6, 4:6) |
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| WTA - Tokyo Olympics | ||||
| 27.07.2021 | Third round | Vondrousova Marketa — Osaka Naomi | 2:0 (6:1, 6:4) |
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| 26.07.2021 | Second round | Golubic Viktorija — Osaka Naomi | 0:2 (3:6, 2:6) |
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| 25.07.2021 | First round | Zheng Saisai — Osaka Naomi | 0:2 (1:6, 4:6) |
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 WTA - French Open | ||||
| 01.06.2021 | Second round | Bogdan Ana — Osaka Naomi | Walkover |
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| 30.05.2021 | First round | Tig Patricia Maria — Osaka Naomi | 0:2 (4:6, 6:7) |
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 WTA - Campionati Internazionali d'Italia | ||||
| 12.05.2021 | Second round | Pegula Jessica — Osaka Naomi | 2:0 (7:6, 6:2) |
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 WTA - Madrid | ||||
| 02.05.2021 | Second round | Muchova Karolina — Osaka Naomi | 2:1 (6:4, 3:6, 6:1) |
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| 30.04.2021 | First round | Doi Misaki — Osaka Naomi | 0:2 (5:7, 2:6) |
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| WTA - NASDAQ-100 | ||||
| 31.03.2021 | Quarter-finals | Sakkari Maria — Osaka Naomi | 2:0 (6:0, 6:4) |
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| 29.03.2021 | 4th Round | Mertens Elise — Osaka Naomi | 0:2 (3:6, 3:6) |
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| 28.03.2021 | Third round | Osaka Naomi — Stojanovic Nina | Walkover |
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| 26.03.2021 | Second round | Tomljanovic Ajla — Osaka Naomi | 0:2 (6:7, 4:6) |
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 WTA - Australian Open | ||||
| 20.02.2021 | Final | Brady Jennifer — Osaka Naomi | 0:2 (4:6, 3:6) |
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| 18.02.2021 | Semi-finals | Osaka Naomi — Williams Serena | 2:0 (6:3, 6:4) |
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| 16.02.2021 | Quarter-finals | Hsieh Su-Wei — Osaka Naomi | 0:2 (2:6, 2:6) |
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| 14.02.2021 | 4th Round | Muguruza Garbine — Osaka Naomi | 1:2 (6:4, 4:6, 5:7) |
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| 12.02.2021 | Third round | Jabeur Ons — Osaka Naomi | 0:2 (3:6, 2:6) |
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| 10.02.2021 | Second round | Garcia Caroline — Osaka Naomi | 0:2 (2:6, 3:6) |
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| 08.02.2021 | First round | Pavlyuchenkova Anastasia — Osaka Naomi | 0:2 (1:6, 2:6) |
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| WTA - Melbourne 1 | ||||
| 06.02.2021 | Semi-finals | Mertens Elise — Osaka Naomi | Walkover |
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| 05.02.2021 | Quarter-finals | Begu Irina-Camelia — Osaka Naomi | 0:2 (5:7, 1:6) |
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| 03.02.2021 | Third round | Boulter Katie — Osaka Naomi | 1:2 (6:3, 3:6, 1:6) |
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| 02.02.2021 | Second round | Cornet Alize — Osaka Naomi | 0:2 (2:6, 2:6) |
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