 Germany: Augsburg - Doubles - Main |
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| 1/8-finals | Pichler D./Vrbensky M. | Kopp S./Veldheer M. | 2:0 (6:2, 6:3) | dettagli | 23.05.2024 |
 Belgium: M25 Arlon - Doubles - Main |
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| 1/8-finals | Basile A./Blockx A. | Kopp S./Veldheer M. | 2:1 (3:6, 6:3, 11:9) | dettagli | 27.06.2023 |
 Italy: M25 Reggio Emilia - Doubles - Main |
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| Quarter-finals | Kopp S./Veldheer M. | Rottoli L./Serafini M. | 0:2 (3:6, 63:7) | dettagli | 17.05.2023 |
| 1/8-finals | Kopp S./Veldheer M. | Bertola R./Ricca G. | 2:1 (6:4, 3:6, 10:8) | dettagli | 16.05.2023 |
 Lithuania: M15 Vilnius - Doubles - Main |
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| Quarter-finals | Kopp S./Veldheer M. | Kobelt N./Skorilas A. | WO. | dettagli | 18.01.2023 |
| 1/8-finals | Kopp S./Veldheer M. | Kielan S./Pawelski M. | 2:1 (5:7, 6:4, 11:9) | dettagli | 16.01.2023 |
 Sweden: M25 Ystad - Doubles - Main |
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| Final | Cook E./Sheyngezikht L. | Kopp S./Veldheer M. | 0:2 (4:6, 2:6) | dettagli | 13.08.2022 |
| Semi-finals | Pichler D./Sorrentino L. | Kopp S./Veldheer M. | 0:2 (2:6, 66:7) | dettagli | 12.08.2022 |
| Quarter-finals | Hellum Lilleengen L./Rivera L. | Kopp S./Veldheer M. | 0:2 (3:6, 4:6) | dettagli | 11.08.2022 |
| 1/8-finals | Goldsteiner P./Lemstra K. | Kopp S./Veldheer M. | 1:2 (3:6, 7:65, 4:10) | dettagli | 09.08.2022 |
 Denmark: M15 Frederiksberg - Doubles - Main |
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| Semi-finals | Kopp S./Veldheer M. | Hannestad B./Overbeck C. E. | 0:2 (65:7, 0:6) | dettagli | 05.08.2022 |
| Quarter-finals | Kopp S./Veldheer M. | Hjorth P./Poulsen Brostrom O. | 2:1 (7:65, 1:6, 10:6) | dettagli | 04.08.2022 |
 Austria: M25 Telfs - Doubles - Main |
|---|
| Final | Horak O./Siniakov D. | Kopp S./Veldheer M. | 0:2 (4:6, 3:6) | dettagli | 16.07.2022 |
| Semi-finals | Kopp S./Veldheer M. | Cozbinov A./Nouza P. | 2:0 (6:2, 6:1) | dettagli | 15.07.2022 |
| Quarter-finals | Dragomirov D./Wolfschmidt A. | Kopp S./Veldheer M. | 0:2 (4:6, 4:6) | dettagli | 14.07.2022 |
| 1/8-finals | Fossati C./Speziali F. | Kopp S./Veldheer M. | 0:2 (2:6, 3:6) | dettagli | 12.07.2022 |
 Greece: M15 Heraklion 7 - Doubles - Main |
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| Semi-finals | Lemstra K./Romios M. C. | Kopp S./Veldheer M. | 2:0 (6:2, 6:4) | dettagli | 19.11.2021 |
| Quarter-finals | Brown P./Seelig K. | Kopp S./Veldheer M. | 0:2 (64:7, 60:7) | dettagli | 18.11.2021 |
| 1/8-finals | Papounidis I./Schinas S. | Kopp S./Veldheer M. | 0:2 (3:6, 61:7) | dettagli | 16.11.2021 |
| Italy: M15 Selva Gardena - Doubles - Main |
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| Quarter-finals | Brzezinski S./Rieder H. | Kopp S./Veldheer M. | WO. | dettagli | 27.10.2021 |
| Germany: M25 Trier - Doubles - Main |
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| Semi-finals | Kopp S./Veldheer M. | Echargui M./Folliot Q. | 0:2 (2:6, 1:6) | dettagli | 27.08.2021 |
| Quarter-finals | Kopp S./Veldheer M. | Chandrasekar A./Sureshkumar M. | 2:0 (6:3, 6:2) | dettagli | 26.08.2021 |
| 1/8-finals | Kopp S./Veldheer M. | Guenther P. G./Schommer F. O. | 2:0 (6:2, 6:1) | dettagli | 24.08.2021 |
| Germany: M25 Frankfurt am Main - Doubles - Main |
|---|
| Quarter-finals | Esteve L. E./Roca Batalla O. | Kopp S./Veldheer M. | 2:0 (7:64, 6:4) | dettagli | 12.08.2021 |
| 1/8-finals | Penzlin J./Sigsgaard C. | Kopp S./Veldheer M. | 0:2 (1:6, 3:6) | dettagli | 11.08.2021 |
| Denmark: M15 Vejle - Doubles - Main |
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| Semi-finals | Kopp S./Veldheer M. | Ingildsen J./Sigsgaard C. | 0:2 (4:6, 4:6) | dettagli | 31.07.2021 |
| Quarter-finals | Holmgren A./Oetzbach A. | Kopp S./Veldheer M. | 0:2 (2:6, 3:6) | dettagli | 30.07.2021 |
| 1/8-finals | Kirkin E./Zukas M. | Kopp S./Veldheer M. | 0:2 (3:6, 64:7) | dettagli | 27.07.2021 |
| Austria: M25 Telfs - Doubles - Main |
|---|
| Quarter-finals | Oberleitner N./Podzus M. | Kopp S./Veldheer M. | 2:1 (67:7, 7:63, 10:6) | dettagli | 16.07.2021 |
 Turkey: M15 Antalya 20 - Doubles - Main |
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| 1/8-finals | Kopp S./Veldheer M. | Luz O./Roveri Sidney G. | 1:2 (6:2, 2:6, 7:10) | dettagli | 18.05.2021 |
| Turkey: M15 Antalya 19 - Doubles - Main |
|---|
| Quarter-finals | Friberg K./Yitbarek S. | Kopp S./Veldheer M. | 2:0 (6:2, 6:4) | dettagli | 13.05.2021 |
| 1/8-finals | Kopp S./Veldheer M. | Forti F./Galoppini D. | 2:0 (6:1, 6:4) | dettagli | 11.05.2021 |
| Turkey: M15 Antalya 18 - Doubles - Main |
|---|
| Quarter-finals | Kopp S./Veldheer M. | Luz O./Roveri Sidney G. | 0:2 (2:6, 2:6) | dettagli | 06.05.2021 |
| 1/8-finals | Glinka D./Tkemaladze Z. | Kopp S./Veldheer M. | 0:2 (4:6, 2:6) | dettagli | 05.05.2021 |
| Turkey: M15 Antalya 8 - Doubles - Main |
|---|
| 1/8-finals | Pucinelli de Almeida M./Reis Da Silva J. | Kopp S./Veldheer M. | 2:0 (6:2, 6:3) | dettagli | 24.02.2021 |
| Turkey: M15 Antalya 7 - Doubles - Main |
|---|
| Quarter-finals | Kopp S./Veldheer M. | Cachin P./Olivieri G. A. | 0:2 (4:6, 2:6) | dettagli | 19.02.2021 |
| 1/8-finals | Fonio G./Roncalli S. | Kopp S./Veldheer M. | 1:2 (6:4, 5:7, 9:11) | dettagli | 17.02.2021 |
| Germany: M15 Oberhaching - Doubles - Main |
|---|
| Quarter-finals | Krstev O./Svrcina D. | Kopp S./Veldheer M. | 2:0 (7:66, 6:3) | dettagli | 20.02.2020 |
| 1/8-finals | Langmajer D./Satral J. | Kopp S./Veldheer M. | 0:2 (4:6, 3:6) | dettagli | 19.02.2020 |
 France: M15 Grenoble - Doubles - Main |
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| 1/8-finals | Kopp S./Veldheer M. | Gueymard Wayenburg S./Salvestre D. | 1:2 (6:3, 62:7, 6:10) | dettagli | 11.02.2020 |
