 Austria: Salzburg - Doubles - Main |
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| Semi-finals | Erler A./Neuchrist M. | Galloway R./Lawson A. | 0:2 (1:6, 2:6) | details | 09.07.2021 |
| Quarter-finals | Erler A./Neuchrist M. | Doumbia S./Reboul F. | 2:0 (6:4, 6:4) | details | 08.07.2021 |
| 1/8-finals | Erler A./Neuchrist M. | Vatutin A./Yevseyev D. | 2:0 (6:0, 6:3) | details | 07.07.2021 |
 Switzerland: M25 Klosters - Doubles - Main |
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| Semi-finals | Erler A./Neuchrist M. | Fallert F./Moreno De Alboran N. | 0:2 (4:6, 62:7) | details | 25.06.2021 |
| Quarter-finals | Erler A./Neuchrist M. | Ehrat S./Wenger D. | 2:0 (6:3, 6:4) | details | 24.06.2021 |
| 1/8-finals | Erler A./Neuchrist M. | Kym J./Nikles J. | 2:0 (6:3, 6:4) | details | 22.06.2021 |
 Bosnia and Herzegovina: M15 Brcko - Doubles - Main |
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| Final | Klier Junior G./Reis Da Silva J. | Bertola R./Neuchrist M. | WO. | details | 23.05.2021 |
| Semi-finals | Bocchi L./Pozzi D. | Bertola R./Neuchrist M. | 0:2 (2:6, 1:6) | details | 22.05.2021 |
| Quarter-finals | Djokic . A./Milanovic D. | Bertola R./Neuchrist M. | 0:2 (4:6, 2:6) | details | 22.05.2021 |
| 1/8-finals | Petrovic D./Teboul L. | Bertola R./Neuchrist M. | 0:2 (2:6, 1:6) | details | 21.05.2021 |
| Bosnia and Herzegovina: M15 Prijedor - Doubles - Main |
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| 1/8-finals | Fatic N./Tadic V. | Bortolotti M./Neuchrist M. | WO. | details | 11.05.2021 |
 Tunisia: M15 Monastir 13 - Doubles - Main |
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| Quarter-finals | Iradukunda G./Tessa L. | Martinez M./Neuchrist M. | 2:1 (6:3, 0:6, 10:6) | details | 15.04.2021 |
| 1/8-finals | Martinez M./Neuchrist M. | Kalenichenko D./Pervolarakis M. | 2:0 (6:3, 6:4) | details | 13.04.2021 |
| Switzerland: M25 Biel - Doubles - Main |
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| Final | Erler A./Neuchrist M. | Paul J./Steinegger Y. | 2:1 (6:3, 4:6, 10:2) | details | 02.04.2021 |
| Semi-finals | Andreev A./Mochizuki S. | Erler A./Neuchrist M. | 0:2 (2:6, 1:6) | details | 02.04.2021 |
| Quarter-finals | Erler A./Neuchrist M. | Ehrat S./Kym J. | 2:0 (6:4, 7:64) | details | 01.04.2021 |
| 1/8-finals | Erler A./Neuchrist M. | Escoffier A./Leshem E. | 2:0 (6:1, 6:2) | details | 30.03.2021 |
 Portugal: M25 Faro - Doubles - Main |
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| 1/8-finals | Fanselow S./Neuchrist M. | Bellier A./Nikles J. | 1:2 (6:2, 65:7, 7:10) | details | 02.03.2021 |
| Portugal: M25 Vale do Lobo - Doubles - Main |
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| Quarter-finals | Added D./Fallert F. | Fanselow S./Neuchrist M. | 2:0 (6:2, 6:4) | details | 25.02.2021 |
| 1/8-finals | Dussin L./Robert Q. | Fanselow S./Neuchrist M. | 0:2 (4:6, 67:7) | details | 23.02.2021 |
 France: M15 Grenoble - Doubles - Main |
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| Quarter-finals | Castelnuovo L./Stricker D. | Martinez M./Neuchrist M. | 2:0 (6:3, 6:3) | details | 10.02.2021 |
| 1/8-finals | Dussin L./Musitelli F. | Martinez M./Neuchrist M. | 0:2 (4:6, 1:6) | details | 09.02.2021 |
| Portugal: M15 Setubal - Doubles - Main |
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| Semi-finals | Alves M./Marcondes I. | Fanselow S./Neuchrist M. | 2:1 (6:4, 3:6, 11:9) | details | 09.10.2020 |
| Quarter-finals | Fanselow S./Neuchrist M. | Ferrari F./Pervolarakis M. | 2:0 (6:4, 6:4) | details | 08.10.2020 |
| 1/8-finals | Fanselow S./Neuchrist M. | Hands T./Johnson L. | 2:0 (6:3, 6:3) | details | 07.10.2020 |
| Portugal: M25 Porto - Doubles - Main |
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| Quarter-finals | Fallert F./Haerteis J. | Neuchrist M./Yang T. | 2:1 (6:1, 65:7, 10:7) | details | 01.10.2020 |
| 1/8-finals | Faria L./Monteiro J. | Neuchrist M./Yang T. | 0:2 (2:6, 4:6) | details | 29.09.2020 |
| Portugal: M15 Sintra 2 - Doubles - Main |
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| Semi-finals | Neuchrist M./Peniston R. | Fanselow S./Steiner M. | 1:2 (65:7, 7:62, 4:10) | details | 17.09.2020 |
| Quarter-finals | Neuchrist M./Peniston R. | Coelho F./Maia H. | 2:1 (3:6, 6:3, 10:5) | details | 16.09.2020 |
