 USA: M15 Rancho Santa Fe, CA - Singles - Main |
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| 1/16-finals | Wiersholm H. | Dickerson R. | 0:2 (2:6, 3:6) | details | 19.06.2024 |
| USA: M15 San Diego, CA 3 - Singles - Main |
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| 1/16-finals | Ponwith N. | Wiersholm H. | 2:1 (6:3, 4:6, 6:1) | details | 12.06.2024 |
 Greece: M15 Heraklion 4 - Singles - Main |
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| 1/8-finals | Wiersholm H. | Xilas I. | 0:2 (2:6, 4:6) | details | 28.03.2024 |
| 1/16-finals | Kimhi O. | Wiersholm H. | 0:2 (1:6, 4:6) | details | 26.03.2024 |
| Greece: M15 Heraklion 3 - Singles - Main |
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| 1/16-finals | Wiersholm H. | Heinonen A. | 1:2 (3:6, 7:62, 2:6) | details | 20.03.2024 |
| Greece: M15 Heraklion 2 - Singles - Main |
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| Final | Prihodko O. | Wiersholm H. | 0:2 (4:6, 3:6) | details | 17.03.2024 |
| Semi-finals | Guerrieri A. | Wiersholm H. | 1:2 (1:6, 6:4, 4:6) | details | 16.03.2024 |
| Quarter-finals | Crowther C. | Wiersholm H. | 1:2 (6:4, 4:6, 4:6) | details | 15.03.2024 |
| 1/8-finals | Wiersholm H. | Bakshi A. | 2:0 (6:3, 7:5) | details | 14.03.2024 |
| 1/16-finals | Lanik T. | Wiersholm H. | 0:2 (0:6, 65:7) | details | 13.03.2024 |
 Portugal: M25 Faro - Singles - Main |
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| 1/16-finals | Smith K. | Wiersholm H. | 2:0 (6:3, 7:5) | details | 27.02.2024 |
| Portugal: M25 Vila Real de Santo Antonio 2 - Singles - Main |
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| 1/16-finals | Ponwith N. | Wiersholm H. | 2:0 (6:1, 6:4) | details | 21.02.2024 |
| USA: M15 Palm Coast, FL - Singles - Main |
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| 1/16-finals | Grant W. | Wiersholm H. | 2:0 (6:3, 6:1) | details | 14.02.2024 |
| USA: M15 Sunrise, FL - Singles - Main |
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| 1/8-finals | Wiersholm H. | Popko D. | 1:2 (3:6, 6:4, 5:7) | details | 08.02.2024 |
| 1/16-finals | Wiersholm H. | Ribeiro Lago E. | 2:1 (6:4, 1:6, 6:1) | details | 07.02.2024 |
| USA: M25 Wesley Chapel, FL - Singles - Main |
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| 1/8-finals | Cid Subervi R. | Wiersholm H. | 2:0 (6:2, 6:0) | details | 25.01.2024 |
| 1/16-finals | Roberts J. | Wiersholm H. | 0:2 (1:6, 64:7) | details | 24.01.2024 |
| USA: M25 Ithaca, NY - Singles - Main |
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| 1/8-finals | Papoe R. M. | Wiersholm H. | 2:0 (6:3, 6:1) | details | 18.01.2024 |
| 1/16-finals | Wiersholm H. | Van Orderlain D. | 2:0 (6:3, 6:2) | details | 17.01.2024 |
 Dominican Republic: M15 Santo Domingo 3 - Singles - Main |
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| Quarter-finals | Wiersholm H. | Kuzuhara B. | 0:2 (2:6, 2:6) | details | 19.11.2023 |
| 1/8-finals | Wiersholm H. | Fellin P. O. | 2:0 (7:5, 6:3) | details | 16.11.2023 |
| 1/16-finals | Wiersholm H. | Gomez Osorio A. | 2:0 (6:3, 6:1) | details | 15.11.2023 |
| Dominican Republic: M15 Santo Domingo 2 - Singles - Main |
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| Quarter-finals | Wiersholm H. | Kuzuhara B. | 1:2 (4:6, 6:1, 5:10) | details | 12.11.2023 |
| 1/8-finals | Wiersholm H. | Vlahos A. | 2:0 (6:1, 6:3) | details | 11.11.2023 |
| 1/16-finals | Wiersholm H. | Lage Castelan L. A. | 2:1 (5:7, 6:0, 6:2) | details | 09.11.2023 |
 Australia: M25 Cairns 2 - Singles - Main |
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| 1/16-finals | Wiersholm H. | Ellis B. | 0:2 (2:6, 63:7) | details | 10.10.2023 |
| Australia: M25 Darwin 2 - Singles - Main |
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| Quarter-finals | Wiersholm H. | Pearson K. | 1:2 (6:4, 3:6, 2:6) | details | 22.09.2023 |
| 1/8-finals | Wiersholm H. | Klintcharov A. | 2:0 (6:2, 6:4) | details | 21.09.2023 |
| 1/16-finals | Kelly D. | Wiersholm H. | 0:0 RET. (4:4) | details | 20.09.2023 |
 Hong Kong: M25 Hong Kong 2 - Singles - Main |
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| Semi-finals | Wiersholm H. | Wong C. | 1:2 (3:6, 7:5, 10:12) | details | 10.09.2023 |
| Quarter-finals | Wiersholm H. | Matsuda R. | 2:0 (6:4, 6:2) | details | 09.09.2023 |
| 1/8-finals | Shin S. | Wiersholm H. | 1:2 (6:1, 3:6, 3:6) | details | 07.09.2023 |
| 1/16-finals | Wiersholm H. | Leung E. Y. H. | 2:0 (6:1, 6:0) | details | 05.09.2023 |
 Taiwan: M25 Tainan 2 - Singles - Main |
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| 1/8-finals | Wiersholm H. | Nishiwaki K. | 1:2 (3:6, 6:3, 1:6) | details | 24.08.2023 |
| 1/16-finals | Ichikawa T. | Wiersholm H. | 0:2 (62:7, 2:6) | details | 23.08.2023 |
| USA: M25 Southaven, MS - Singles - Main |
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| 1/16-finals | Andrade A. | Wiersholm H. | 2:1 (4:6, 6:3, 6:4) | details | 09.08.2023 |
| USA: M25 Decatur, IL - Singles - Main |
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| 1/16-finals | Wiersholm H. | Braswell J. | 1:2 (4:6, 6:2, 0:6) | details | 02.08.2023 |
| USA: M15 Pittsburgh, PA - Singles - Main |
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| 1/16-finals | Aguilar J. C. M. | Wiersholm H. | 2:0 (6:4, 7:63) | details | 25.07.2023 |
| Greece: M15 Heraklion 3 - Doubles - Main |
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| Semi-finals | O'Hoisin O./Wiersholm H. | Andre S./Jadoun N. | 0:0 RET. (3:5) | details | 23.03.2024 |
| Quarter-finals | Thanos A./Xilas I. | O'Hoisin O./Wiersholm H. | 0:2 (4:6, 4:6) | details | 22.03.2024 |
| 1/8-finals | Kimhi O./Shimanov O. | O'Hoisin O./Wiersholm H. | 0:2 (65:7, 4:6) | details | 19.03.2024 |
| Portugal: M25 Vila Real de Santo Antonio 2 - Doubles - Main |
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| Quarter-finals | Araujo P./Vasa E. | Ponwith N./Wiersholm H. | 2:1 (0:6, 6:3, 10:6) | details | 22.02.2024 |
| 1/8-finals | Ponwith N./Wiersholm H. | Dudun I./Troost S. | 2:1 (7:61, 3:6, 10:8) | details | 21.02.2024 |
| Australia: M25 Cairns 2 - Doubles - Main |
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| Quarter-finals | Ferguson C./Jones S. | Pearson K./Wiersholm H. | 2:1 (6:2, 2:6, 10:4) | details | 12.10.2023 |
| 1/8-finals | Pearson K./Wiersholm H. | Kose C./Mousley B. | 2:0 (6:3, 7:66) | details | 11.10.2023 |
| Australia: M25 Cairns - Doubles - Main |
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| Final | Pearson K./Wiersholm H. | Isomura K./Tajima N. | 2:0 (6:2, 6:1) | details | 07.10.2023 |
| Semi-finals | Beale J./Fancutt T. J. | Pearson K./Wiersholm H. | 1:2 (3:6, 6:3, 11:13) | details | 06.10.2023 |
| Quarter-finals | Pearson K./Wiersholm H. | Hulme M./Ryan Ziegann S. | 2:1 (7:65, 3:6, 10:6) | details | 05.10.2023 |
| 1/8-finals | Jones S./Papac T. E. | Pearson K./Wiersholm H. | 0:2 (4:6, 4:6) | details | 04.10.2023 |
| 1/8-finals | Addison A./Cook E. | Pearson K./Wiersholm H. | CAN. | details | 04.10.2023 |