 Portugal: M15 Quinta Do Lago - Singles - Main |
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| 1/16-finals | Graziani E. | Kestelboim M. | 2:1 (1:6, 6:2, 6:1) | details | 03.11.2020 |
 Romania: M15 Curtea de Arges - Doubles - Main |
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| Semi-finals | Agamenone F./Kestelboim M. | Barbu A./Palosi S. | 0:2 (4:6, 3:6) | details | 18.09.2020 |
| Romania: M15 Curtea de Arges - Singles - Main |
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| 1/16-finals | Kestelboim M. | Agamenone F. | 0:2 (3:6, 2:6) | details | 16.09.2020 |
 Argentina: M25 Hurlingham - Doubles - Main |
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| Quarter-finals | Hidalgo G. A./Monzon I. | Cerundolo J. M./Kestelboim M. | 2:1 (3:6, 6:2, 11:9) | details | 05.03.2020 |
| Argentina: M25 Hurlingham - Singles - Main |
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| 1/8-finals | Kestelboim M. | Arguello F. | 0:2 (3:6, 2:6) | details | 05.03.2020 |
| 1/16-finals | Barrena A. | Kestelboim M. | 0:2 (4:6, 3:6) | details | 04.03.2020 |
| Argentina: M25 Hurlingham - Doubles - Main |
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| 1/8-finals | De La Fuente S./Torres J. B. | Cerundolo J. M./Kestelboim M. | 1:2 (6:4, 1:6, 7:10) | details | 03.03.2020 |
| Argentina: M25 Rio Cuarto - Doubles - Main |
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| Final | Merino A./Pena Lopez M. | Etcheverry T. M./Kestelboim M. | 1:2 (3:6, 6:1, 2:10) | details | 01.03.2020 |
| Semi-finals | Etcheverry T. M./Kestelboim M. | Zeballos F./Zukas M. | 2:1 (4:6, 6:4, 11:9) | details | 28.02.2020 |
| Argentina: M25 Rio Cuarto - Singles - Main |
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| Quarter-finals | Kestelboim M. | Agamenone F. | 0:2 (5:7, 5:7) | details | 28.02.2020 |
| Argentina: M25 Rio Cuarto - Doubles - Main |
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| Quarter-finals | Diaz Acosta F./Tirante T. A. | Etcheverry T. M./Kestelboim M. | WO. | details | 27.02.2020 |
| Argentina: M25 Rio Cuarto - Singles - Main |
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| 1/8-finals | Justo G. I. | Kestelboim M. | 0:1 RET. (1:6, 0:1) | details | 27.02.2020 |
| Argentina: M25 Rio Cuarto - Doubles - Main |
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| 1/8-finals | Carnevalle L./Gaspero F. | Etcheverry T. M./Kestelboim M. | 0:2 (0:6, 1:6) | details | 26.02.2020 |
| Argentina: M25 Rio Cuarto - Singles - Main |
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| 1/16-finals | Dutra Da Silva D. | Kestelboim M. | 1:2 (63:7, 6:3, 3:6) | details | 25.02.2020 |
 Uruguay: M25 Punta del Este - Doubles - Main |
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| Semi-finals | Etcheverry T. M./Kestelboim M. | Agamenone F./Dutra Da Silva D. | 1:2 (7:62, 63:7, 6:10) | details | 20.02.2020 |
| Quarter-finals | Cuevas M./Galdos S. | Etcheverry T. M./Kestelboim M. | 0:2 (2:6, 4:6) | details | 20.02.2020 |
| Uruguay: M25 Punta del Este - Singles - Main |
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| 1/8-finals | Kestelboim M. | Villanueva G. | 1:2 (1:6, 7:63, 2:6) | details | 19.02.2020 |
| 1/16-finals | Vilaro A. | Kestelboim M. | 1:2 (2:6, 6:4, 2:6) | details | 18.02.2020 |
| Uruguay: M25 Punta del Este - Doubles - Main |
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| 1/8-finals | Cerundolo F./Sorgi J. P. | Etcheverry T. M./Kestelboim M. | 1:2 (7:62, 3:6, 9:11) | details | 17.02.2020 |
 Peru: M25 Lima 2 - Singles - Main |
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| Semi-finals | Barrios T. | Kestelboim M. | 2:1 (6:3, 4:6, 7:5) | details | 15.02.2020 |
| Quarter-finals | Zeballos F. | Kestelboim M. | 0:2 (2:6, 1:6) | details | 14.02.2020 |
| 1/8-finals | Kestelboim M. | Tirante T. A. | 2:1 (5:7, 7:64, 6:4) | details | 13.02.2020 |
| Peru: M25 Lima 2 - Doubles - Main |
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| 1/8-finals | Galdos S./Huertas Del Pino C. | Etcheverry T. M./Kestelboim M. | 2:0 (6:1, 7:64) | details | 12.02.2020 |
| Peru: M25 Lima 2 - Singles - Main |
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| 1/16-finals | Matos R. | Kestelboim M. | 1:2 (5:7, 6:4, 2:6) | details | 11.02.2020 |
| Peru: M25 Lima - Doubles - Main |
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| Quarter-finals | Barrios T./Gomez-Herrera C. | Etcheverry T. M./Kestelboim M. | 2:0 (6:3, 7:5) | details | 06.02.2020 |
| Peru: M25 Lima - Singles - Main |
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| 1/8-finals | Barrios T. | Kestelboim M. | 2:0 (6:4, 6:3) | details | 06.02.2020 |
| 1/16-finals | Kestelboim M. | Matos R. | 2:0 (6:4, 6:3) | details | 05.02.2020 |
| Peru: M25 Lima - Doubles - Main |
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| 1/8-finals | Etcheverry T. M./Kestelboim M. | Ballotta G./Iamachkine P. | 2:0 (6:3, 6:0) | details | 04.02.2020 |
| Uruguay: Punta Del Este - Singles - Main |
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| 1/16-finals | Kestelboim M. | Monteiro T. | 0:2 (4:6, 4:6) | details | 30.01.2020 |
| Uruguay: Punta Del Este - Doubles - Main |
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| 1/8-finals | Mena F./Ugo Carabelli C. | Duran G./Kestelboim M. | 2:0 (6:4, 6:4) | details | 28.01.2020 |
| Uruguay: Punta Del Este - Singles - Main |
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| 1/32-finals | Gutierrez Oscar J. | Kestelboim M. | 1:2 (4:6, 6:3, 5:7) | details | 27.01.2020 |
 USA: Naples 2 - Singles - Main |
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| Quarter-finals | Andreev A. | Kestelboim M. | 2:0 (6:3, 7:65) | details | 01.11.2019 |
| 1/8-finals | Rodriguez Taverna S. | Kestelboim M. | 0:2 (2:6, 3:6) | details | 31.10.2019 |
| 1/16-finals | Cozbinov A. | Kestelboim M. | 1:2 (6:4, 2:6, 4:6) | details | 30.10.2019 |
| Argentina: Buenos Aires 2 - Singles - Main |
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| 1/32-finals | Kestelboim M. | Diaz Acosta F. | 1:2 (3:6, 7:5, 5:7) | details | 24.09.2019 |
 Germany: Saarlouis - Singles - Main |
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| 1/16-finals | Kestelboim M. | Santanna B. | 0:1 RET. (3:6, 1:3) | details | 02.07.2019 |
 Italy: Santa Margherita Di Pula 5 - Singles - Main |
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| 1/16-finals | Kestelboim M. | Harris B. | 0:2 (4:6, 1:6) | details | 03.04.2018 |
 Poland: Poznan - Singles - Main |
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| 1/8-finals | Kestelboim M. | Ramirez-H.R. | 0:2 (3:6, 2:6) | details | 19.07.2017 |
| 1/16-finals | Kestelboim M. | Balaji N. S. | 2:0 (6:4, 6:4) | details | 18.07.2017 |
| Uruguay: Montevideo - Singles - Main |
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| 1/16-finals | Zampieri C. | Kestelboim M. | 2:1 (3:6, 7:65, 6:1) | details | 15.11.2016 |
| Argentina: Buenos Aires 2 - Singles - Main |
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| 1/16-finals | Kestelboim M. | Hernandez-Fernandez J. | 1:2 (6:2, 2:6, 3:6) | details | 11.10.2016 |
Brazil: Sao Paulo - Doubles - Main
Czech Republic: Prague - Doubles - Main
Ecuador: Guayaquil - Doubles - Main