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Alicante 2 
Davis Сup Group I Tenis. Oynanan Matsuda Koki. Sezon 2026
Ülke 
Japonya. Sıralaması ATP 475.
Japonya. Sıralaması ATP 475. | ||||
|---|---|---|---|---|
| 20.10.2026 | İlk hafta | Matsuda Koki — Zhou Yi | 0:2 (1:6, 3:6) |
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| 19.10.2026 | Çeyrek - Final | Matsuda Koki — Jasika Omar | 2:0 (6:4, 7:6) |
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| 06.10.2026 | İlk hafta | Zhu Evan — Matsuda Koki | 2:0 (6:3, 6:3) |
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| 15.09.2026 | İlk hafta | Weber Arthur — Matsuda Koki | 2:0 (6:1, 6:2) |
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| 11.09.2026 | İkinci hafta | Sekulic Philip — Matsuda Koki | 2:1 (6:2, 4:6, 7:5) |
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| Zhangjiagang Challenger | ||||
| 01.09.2026 | İlk hafta | Matsuda Koki — Delaney Jake | 2:0 (7:6, 7:6) |
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 Astana 1 | ||||
| 10.08.2026 | İlk hafta | Matsuda Koki — Matsuoka Hayato | 0:2 (3:6, 4:6) |
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 Istanbul 2 | ||||
| 07.08.2026 | Çeyrek - Final | Matsuda Koki — Brouwer Gijs | 1:2 (4:6, 6:1, 2:6) |
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| 06.08.2026 | İkinci hafta | Inchauspe Paul — Matsuda Koki | 1:2 (4:6, 6:4, 4:6) |
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| 03.08.2026 | Çeyrek - Final | Matsuda Koki — Ostapenkov Daniil | 2:0 (7:6, 6:3) |
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| 02.08.2026 | Elemeler - 1. Hafta | Matsuda Koki — Ilkel Cem | 2:0 (6:2, 7:5) |
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| 31.07.2026 | Çeyrek - Final | Matsuda Koki — Debru Gabriel | 1:2 (6:4, 6:7, 3:6) |
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| 29.07.2026 | İkinci hafta | Sinclair Colin — Matsuda Koki | 0:2 (3:6, 3:6) |
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| 31.03.2026 | İlk hafta | Moriya Hiroki — Matsuda Koki | 2:1 (4:6, 6:4, 6:0) |
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| 30.03.2026 | Çeyrek - Final | Kusuhara Yusuke — Matsuda Koki | 0:2 (4:6, 2:6) |
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| Yokkaichi | ||||
| 22.03.2026 | Elemeler - 1. Hafta | Sun Fajing — Matsuda Koki | 2:0 (6:3, 6:4) |
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 Nonthaburi 1 | ||||
| 06.01.2026 | İlk hafta | Matsuda Koki — Sharipov Marat | 0:2 (3:6, 6:7) |
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