 USA: Norman 2 - Singles - Main |
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| 1/16-finals | Watson A. | Kirchheimer S. | 0:2 (3:6, 1:6) | dettagli | 01.10.2019 |
| USA: M25 Harlingen, TX - Singles - Main |
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| 1/8-finals | Andreev A. | Watson A. | 2:0 (6:4, 6:3) | dettagli | 27.09.2019 |
| 1/16-finals | Khan Z. | Watson A. | 0:2 (4:6, 1:6) | dettagli | 26.09.2019 |
| USA: Houston - Singles - Main |
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| 1/8-finals | Ignat D. C. | Watson A. | 2:1 (6:2, 4:6, 6:1) | dettagli | 20.09.2019 |
| 1/16-finals | Gray J. | Watson A. | 0:2 (2:6, 3:6) | dettagli | 18.09.2019 |
| USA: M25 Champaign, IL 2 - Singles - Main |
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| 1/8-finals | Draxl L. | Watson A. | 2:0 (6:2, 7:5) | dettagli | 12.09.2019 |
| 1/16-finals | Hamilton G. | Watson A. | 0:2 (1:6, 1:6) | dettagli | 10.09.2019 |
 United Kingdom: Chiswick - Singles - Main |
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| 1/16-finals | Watson A. | Matusevich A. | 1:2 (4:6, 6:2, 4:6) | dettagli | 06.08.2019 |
| United Kingdom: Surbiton - Singles - Main |
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| 1/32-finals | Watson A. | Chung Y. | 0:2 (2:6, 2:6) | dettagli | 04.06.2019 |
| USA: M25 Pensacola, FL - Singles - Main |
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| 1/8-finals | Watson A. | Olivares J. | 1:2 (7:65, 4:6, 1:6) | dettagli | 09.05.2019 |
| 1/16-finals | Arconada J. | Watson A. | 1:2 (3:6, 6:3, 4:6) | dettagli | 08.05.2019 |
| USA: Vero Beach - Singles - Main |
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| 1/8-finals | Watson A. | Oosterbaan P. C. | 0:2 (4:6, 3:6) | dettagli | 02.05.2019 |
| 1/16-finals | Malla B. | Watson A. | 0:2 (63:7, 5:7) | dettagli | 30.04.2019 |
| USA: Bakersfield - Singles - Main |
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| 1/8-finals | Watson A. | Bangoura S. | 0:2 (1:6, 4:6) | dettagli | 14.03.2019 |
| 1/16-finals | Dunbar J. | Watson A. | 1:2 (6:4, 1:6, 3:6) | dettagli | 13.03.2019 |
 Germany: M25 Nussloch - Singles - Main |
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| 1/16-finals | Heller P. | Watson A. | 2:0 (6:3, 6:2) | dettagli | 23.01.2019 |
| USA: Tallahassee - Singles - Main |
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| 1/8-finals | Watson A. | Habib H. | 1:2 (4:6, 6:1, 5:7) | dettagli | 05.12.2018 |
| 1/16-finals | Watson A. | Chappell N. | 2:1 (6:4, 1:6, 6:1) | dettagli | 03.12.2018 |
| USA: Norman - Singles - Main |
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| Quarter-finals | Watson A. | Vocel M. | 1:2 (3:6, 7:5, 4:6) | dettagli | 16.11.2018 |
| 1/8-finals | Watson A. | Calvo Eman F. | 2:0 (7:5, 6:2) | dettagli | 15.11.2018 |
| 1/16-finals | Watson A. | Gray A. | 2:1 (6:4, 2:6, 7:67) | dettagli | 14.11.2018 |
| USA: Waco 2 - Singles - Main |
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| 1/8-finals | Watson A. | Cressy M. | 0:2 (67:7, 1:6) | dettagli | 25.10.2018 |
| 1/16-finals | Schretter J. | Watson A. | 1:2 (1:6, 7:66, 0:6) | dettagli | 23.10.2018 |
| USA: Harlingen - Singles - Main |
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| Final | Watson A. | Crawford O. | 0:2 (1:6, 1:6) | dettagli | 21.10.2018 |
| Semi-finals | Yevseyev D. | Watson A. | 1:2 (4:6, 6:4, 4:6) | dettagli | 20.10.2018 |
| Quarter-finals | Borges N. | Watson A. | 0:2 (63:7, 65:7) | dettagli | 19.10.2018 |
| 1/8-finals | Nefve A. | Watson A. | 1:2 (7:5, 2:6, 66:7) | dettagli | 18.10.2018 |
| 1/16-finals | Watson A. | Catanzariti A.J. | 2:0 (6:1, 6:3) | dettagli | 17.10.2018 |
| USA: Houston - Singles - Main |
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| 1/8-finals | Watson A. | Kypson P. | 0:2 (3:6, 3:6) | dettagli | 12.10.2018 |
| 1/16-finals | Nesterov A. | Watson A. | 1:2 (7:64, 4:6, 0:6) | dettagli | 10.10.2018 |
| 1/16-finals | Ritschard A. | Watson A. | CAN. | dettagli | 10.10.2018 |
| United Kingdom: London - Roehampton - Singles - Main |
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| Quarter-finals | Watson A. | Bellier A. | 1:2 (65:7, 6:2, 63:7) | dettagli | 20.09.2018 |
| 1/8-finals | McHugh A. | Watson A. | 1:2 (4:6, 6:4, 1:6) | dettagli | 19.09.2018 |
| 1/16-finals | Watson A. | Hodkin S. | 2:0 (6:4, 6:2) | dettagli | 18.09.2018 |
| United Kingdom: Nottingham - Singles - Main |
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| Final | Watson A. | Draper J. | 1:2 (6:3, 63:7, 0:6) | dettagli | 15.09.2018 |
| Semi-finals | Watson A. | Peniston R. | 2:1 (4:6, 7:60, 6:3) | dettagli | 14.09.2018 |
| Quarter-finals | Harris B. | Watson A. | 0:2 (2:6, 1:6) | dettagli | 13.09.2018 |
| 1/8-finals | Watson A. | Pauffley N. | 2:0 (6:4, 6:1) | dettagli | 12.09.2018 |
| 1/16-finals | Watson A. | Botezan G. | 1:0 RET. (6:3, 4:0) | dettagli | 11.09.2018 |
 Spain: San Sebastian - Singles - Main |
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| 1/8-finals | Watson A. | Oliel Y. | 1:2 (3:6, 7:64, 3:6) | dettagli | 29.08.2018 |
| 1/16-finals | Watson A. | Hidalgo D. | 1:0 RET. (6:3, 2:0) | dettagli | 27.08.2018 |
| Spain: Santander - Singles - Main |
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| 1/8-finals | Watson A. | Boluda-Purkiss C. | 0:2 (4:6, 4:6) | dettagli | 22.08.2018 |
| 1/16-finals | Watson A. | Peniston R. | 2:0 (6:2, 6:4) | dettagli | 21.08.2018 |
 Italy: Casinalbo - Singles - Main |
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| 1/8-finals | Watson A. | Santanna B. | 0:2 (4:6, 5:7) | dettagli | 12.07.2017 |
| 1/16-finals | Roberto R. | Watson A. | 0:2 (2:6, 3:6) | dettagli | 11.07.2017 |
| Italy: Albinea - Singles - Main |
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| 1/8-finals | Collarini A. | Watson A. | 2:1 (3:6, 6:0, 6:0) | dettagli | 05.07.2017 |
| 1/16-finals | Watson A. | Baldi F. | 1:0 RET. (6:4, 5:2) | dettagli | 04.07.2017 |
| USA: Memphis - Singles - Qualification |
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| Semi-finals | King D. | Watson A. | 2:0 (6:2, 6:3) | dettagli | 11.02.2017 |
| USA: Pensacola - Singles - Main |
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| 1/8-finals | Auger-Aliassime F. | Watson A. | 2:0 (6:3, 6:1) | dettagli | 17.11.2016 |