 Turkey: M15 Antalya 5 - Doubles - Main |
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| 1/8-finals | Lee K./Wang K. | Fumagalli F./Kountourakis I. | 2:0 (6:1, 7:63) | details | 05.03.2024 |
 Greece: M25 Heraklion 3 - Doubles - Main |
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| 1/8-finals | Calzi R./Weintraub B. | Kountourakis I./Pietri B. | 2:0 (6:3, 7:64) | details | 28.11.2023 |
| Greece: M15 Heraklion 5 - Doubles - Main |
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| Quarter-finals | Freund S./Papa C. | Kountourakis I./Sakellaridis D. | 2:1 (68:7, 6:2, 12:10) | details | 16.11.2023 |
| 1/8-finals | Kountourakis I./Sakellaridis D. | Holban V./Kypriotis E. | 2:0 (6:1, 7:63) | details | 14.11.2023 |
 Serbia: M15 Kursumlijska Banja 9 - Doubles - Main |
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| 1/8-finals | Kountourakis I./Valle F. | Pisaric A./Radjenovic V. | 1:2 (6:4, 3:6, 3:10) | details | 20.09.2023 |
| Serbia: M15 Pirot - Doubles - Main |
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| Quarter-finals | Boureau A./Kountourakis I. | Jovic V./Pavlovic L. | 0:2 (3:6, 4:6) | details | 07.09.2023 |
| 1/8-finals | Krapivin M./Pogosian S. | Boureau A./Kountourakis I. | 1:2 (6:3, 4:6, 8:10) | details | 06.09.2023 |
| Serbia: M15 Kursumlijska Banja 7 - Doubles - Main |
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| Quarter-finals | Ivanov M./Kountourakis I. | Gandolfi G./Misasi G. | 0:2 (4:6, 1:6) | details | 31.08.2023 |
| 1/8-finals | Arutiunian E./Folliot Q. | Ivanov M./Kountourakis I. | 0:2 (3:6, 3:6) | details | 29.08.2023 |
| Greece: M25 Heraklion 2 - Doubles - Main |
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| 1/8-finals | Kountourakis I./Srbljak G. | Cukierman D./Uzhylovskyi V. | 0:2 (1:6, 3:6) | details | 22.11.2022 |
| Greece: M15 Heraklion 8 - Doubles - Main |
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| 1/8-finals | Pel S./Suksumrarn T. | Antonopoulos C./Kountourakis I. | 2:1 (4:6, 6:2, 10:3) | details | 01.11.2022 |
 Austria: M15 Kottingbrunn 2 - Doubles - Main |
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| Quarter-finals | Ivanovski K./Kountourakis I. | Ferrari F./Zanotti A. | 1:2 (3:6, 6:3, 7:10) | details | 04.08.2022 |
| 1/8-finals | Ivanovski K./Kountourakis I. | Dragomirov D./Sorger S. | 2:1 (6:3, 2:6, 10:5) | details | 02.08.2022 |
| Austria: M15 Kottingbrunn - Doubles - Main |
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| 1/8-finals | Dellavedova M./Kountourakis I. | Novansky M./Palovic L. | 1:2 (6:3, 64:7, 7:10) | details | 27.07.2022 |
| Greece: M15 Heraklion 4 - Doubles - Main |
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| 1/8-finals | Elamin A./Ozolins K. | Kountourakis I./Papounidis I. | 2:1 (64:7, 6:2, 10:5) | details | 31.05.2022 |
| Greece: M15 Heraklion 3 - Doubles - Main |
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| 1/8-finals | Cash J./Whitehouse M. | Kountourakis I./Papounidis I. | 2:1 (6:1, 5:7, 10:5) | details | 24.05.2022 |
| Greece: M15 Heraklion 2 - Doubles - Main |
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| Quarter-finals | Hazawa S./Sekiguchi S. | Kountourakis I./Papounidis I. | 2:1 (2:6, 6:4, 10:2) | details | 19.05.2022 |
| 1/8-finals | Kountourakis I./Papounidis I. | Earnshaw M./Sanghera T. | WO. | details | 17.05.2022 |
| Greece: M15 Heraklion - Doubles - Main |
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| 1/8-finals | Kountourakis I./Thanos A. | Cook E./Gray T. | 0:2 (63:7, 64:7) | details | 10.05.2022 |
 Egypt: M25 Sharm ElSheikh 2 - Doubles - Main |
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| 1/8-finals | Elsayed A./Maamoun K.M. | Kountourakis I./Skorilas A. | 2:0 (6:4, 6:4) | details | 08.02.2022 |
| Egypt: M25 Sharm ElSheikh - Doubles - Main |
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| 1/8-finals | Elsayed A./Maamoun K.M. | Kountourakis I./Skorilas A. | 2:0 (6:4, 6:2) | details | 01.02.2022 |
| Egypt: M25 Cairo - Doubles - Main |
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| Quarter-finals | Kountourakis I./Skorilas A. | Cervantes I./Roca Batalla O. | 0:2 (4:6, 3:6) | details | 27.01.2022 |
| 1/8-finals | Kountourakis I./Skorilas A. | Fu H./Hamza Reguig S. | 2:0 (7:5, 6:3) | details | 25.01.2022 |
| Greece: M15 Heraklion 9 - Doubles - Main |
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| Quarter-finals | Lanik T./Vaitiekunas P. | Kountourakis I./Skorilas A. | 2:1 (6:3, 4:6, 10:7) | details | 02.12.2021 |
| 1/8-finals | Tsitsipas Pa./Tsitsipas Pe. | Kountourakis I./Skorilas A. | 0:2 (2:6, 4:6) | details | 30.11.2021 |
| Greece: M15 Heraklion 8 - Doubles - Main |
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| 1/8-finals | Kountourakis I./Skorilas A. | Park U./Wendelken H. | 1:2 (6:3, 2:6, 3:10) | details | 23.11.2021 |
| Greece: M15 Heraklion 7 - Doubles - Main |
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| 1/8-finals | Bergevi F./Wehnelt K. | Kountourakis I./Skorilas A. | 2:0 (6:2, 7:61) | details | 16.11.2021 |
| Greece: M15 Heraklion 6 - Doubles - Main |
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| 1/8-finals | Kountourakis I./Skorilas A. | Ma W./Musialek A. | 0:2 (3:6, 2:6) | details | 09.11.2021 |
| Greece: M15 Heraklion 5 - Doubles - Main |
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| 1/8-finals | Eriksson M./Romios M. C. | Kountourakis I./Skorilas A. | 2:0 (6:2, 6:2) | details | 02.11.2021 |
| Egypt: M15 Cairo 13 - Doubles - Main |
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| Semi-finals | Kountourakis I./Skorilas A. | Tanuma R./Watanabe S. | 0:2 (1:6, 5:7) | details | 10.09.2021 |
Germany: M15 Cadolzburg - Singles - Main