 USA: Miami - Singles - Qualification |
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| Semi-finals | Donaldson J. | Rublev A. | 0:2 (2:6, 3:6) | details | 18.03.2019 |
| USA: Indian Wells - Singles - Main |
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| 1/32-finals | Donaldson J. | Nadal R. | 0:2 (1:6, 1:6) | details | 11.03.2019 |
| 1/64-finals | Ito T. | Donaldson J. | 0:2 (3:6, 5:7) | details | 09.03.2019 |
| USA: Indian Wells - Singles - Main |
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| 1/16-finals | Giraldo S. | Donaldson J. | 2:1 (6:2, 2:6, 6:4) | details | 27.02.2019 |
| USA: Delray Beach - Singles - Main |
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| 1/16-finals | Garcia-Lopez G. | Donaldson J. | 2:1 (2:6, 6:3, 6:3) | details | 19.02.2019 |
| USA: US Open - Singles - Main |
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| 1/64-finals | Raonic M. | Donaldson J. | CAN. | details | 27.08.2018 |
 Canada: Toronto - Singles - Main |
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| 1/32-finals | Donaldson J. | Paire B. | 0:2 (3:6, 4:6) | details | 06.08.2018 |
| USA: Washington - Singles - Main |
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| 1/16-finals | Tsitsipas S. | Donaldson J. | 2:1 (3:6, 6:3, 7:5) | details | 01.08.2018 |
| 1/32-finals | Donaldson J. | Thompson J. | 2:0 (6:4, 7:64) | details | 31.07.2018 |
 United Kingdom: Wimbledon - Singles - Main |
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| 1/32-finals | Tsitsipas S. | Donaldson J. | 3:2 (6:3, 6:2, 3:6, 4:6, 6:3) | details | 05.07.2018 |
| 1/64-finals | Jaziri M. | Donaldson J. | 0:3 (65:7, 3:6, 1:6) | details | 02.07.2018 |
| United Kingdom: Eastbourne - Singles - Main |
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| 1/8-finals | Donaldson J. | Shapovalov D. | 1:2 (4:6, 6:4, 2:6) | details | 27.06.2018 |
| 1/16-finals | Donaldson J. | Fritz T. | 2:1 (68:7, 6:3, 7:63) | details | 25.06.2018 |
| United Kingdom: London - Singles - Main |
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| 1/16-finals | Donaldson J. | Tiafoe F. | 0:2 (4:6, 64:7) | details | 18.06.2018 |
 France: French Open - Singles - Main |
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| 1/32-finals | Donaldson J. | Dimitrov G. | 2:3 (7:62, 4:6, 6:4, 4:6, 8:10) | details | 30.05.2018 |
| 1/64-finals | Jarry N. | Donaldson J. | 2:3 (3:6, 6:4, 6:3, 3:6, 4:6) | details | 27.05.2018 |
 Switzerland: Geneva - Singles - Main |
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| 1/8-finals | Wawrinka S. | Donaldson J. | 2:0 (6:3, 6:4) | details | 23.05.2018 |
| 1/16-finals | Donaldson J. | Istomin D. | 2:1 (5:7, 6:4, 6:0) | details | 21.05.2018 |
 Italy: Rome - Singles - Main |
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| 1/32-finals | Donaldson J. | Carreno-Busta P. | 1:2 (4:6, 6:3, 0:6) | details | 14.05.2018 |
 Spain: Madrid - Singles - Main |
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| 1/32-finals | Bautista-Agut R. | Donaldson J. | 2:1 (63:7, 6:4, 6:4) | details | 08.05.2018 |
| Spain: Barcelona - Singles - Main |
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| 1/32-finals | Donaldson J. | Silva D. R. | 0:2 (3:6, 1:6) | details | 23.04.2018 |
 Monaco: Monte Carlo - Singles - Main |
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| 1/32-finals | Donaldson J. | Ramos A. | 0:2 (3:6, 3:6) | details | 16.04.2018 |
| USA: Miami - Singles - Main |
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| 1/16-finals | Sousa J. | Donaldson J. | 2:1 (1:6, 6:3, 6:4) | details | 25.03.2018 |
| 1/32-finals | Donaldson J. | Lopez F. | 2:0 (6:4, 6:2) | details | 23.03.2018 |
| 1/64-finals | Donaldson J. | Baghdatis M. | 2:0 (6:3, 6:4) | details | 22.03.2018 |
| USA: Irving - Singles - Main |
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| 1/8-finals | Kukushkin M. | Donaldson J. | 2:0 (6:3, 6:3) | details | 16.03.2018 |
| 1/16-finals | Albot R. | Donaldson J. | 0:2 (4:6, 64:7) | details | 14.03.2018 |
| USA: Indian Wells - Singles - Main |
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| 1/32-finals | Donaldson J. | Bautista-Agut R. | 0:2 (4:6, 2:6) | details | 11.03.2018 |
| 1/64-finals | Donaldson J. | King E. | 2:1 (6:1, 4:6, 6:4) | details | 09.03.2018 |
 Mexico: Acapulco - Singles - Main |
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| Semi-finals | Donaldson J. | Anderson K. | 1:2 (3:6, 6:4, 3:6) | details | 03.03.2018 |
| Quarter-finals | Lopez F. | Donaldson J. | 0:2 (3:6, 1:6) | details | 01.03.2018 |
| 1/8-finals | Donaldson J. | Ebden M. | 2:0 (6:3, 6:1) | details | 28.02.2018 |
| 1/16-finals | Basilashvili N. | Donaldson J. | 0:1 RET. (2:6, 2:3) | details | 26.02.2018 |
| USA: Delray Beach - Singles - Main |
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| 1/8-finals | Donaldson J. | Shapovalov D. | 1:2 (7:66, 4:6, 4:6) | details | 22.02.2018 |
| 1/16-finals | Polansky P. | Donaldson J. | 0:2 (66:7, 1:6) | details | 20.02.2018 |
| 1/16-finals | Mannarino A. | Donaldson J. | CAN. | details | 20.02.2018 |
| USA: New York - Singles - Main |
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| 1/16-finals | Donaldson J. | Karlovic I. | 0:2 (4:6, 64:7) | details | 12.02.2018 |
 Australia: Australian Open - Singles - Main |
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| 1/64-finals | Donaldson J. | Ramos A. | 0:3 (2:6, 3:6, 4:6) | details | 16.01.2018 |
| Australia: Sydney - Singles - Main |
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| 1/8-finals | Donaldson J. | Medvedev D. | 1:2 (3:6, 6:4, 5:7) | details | 10.01.2018 |
| 1/16-finals | Simon G. | Donaldson J. | 0:2 (1:6, 4:6) | details | 09.01.2018 |
| Australia: Brisbane - Singles - Main |
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| 1/8-finals | Istomin D. | Donaldson J. | 2:0 (7:65, 6:2) | details | 04.01.2018 |
| 1/16-finals | Donaldson J. | Thompson J. | 2:0 (6:2, 6:4) | details | 01.01.2018 |
 World: Next Gen Finals - Milan - Main |
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| Group B | Donaldson J. | Medvedev D. | 1:3 (4:33, 2:4, 31:4, 0:4) | details | 09.11.2017 |
| Group B | Khachanov K. | Donaldson J. | 3:0 (4:1, 4:33, 4:2) | details | 08.11.2017 |
| Group B | Coric B. | Donaldson J. | 3:0 (4:32, 4:1, 4:35) | details | 07.11.2017 |
| France: Paris - Singles - Qualification |
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| Semi-finals | Donaldson J. | Garcia-Lopez G. | 1:2 (5:7, 7:60, 4:6) | details | 28.10.2017 |
| Switzerland: Basel - Singles - Main |
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| 1/16-finals | Fucsovics M. | Donaldson J. | 2:0 (6:0, 6:1) | details | 25.10.2017 |
 Belgium: Antwerp - Singles - Main |
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| 1/16-finals | Stakhovsky S. | Donaldson J. | 2:0 (7:64, 6:4) | details | 16.10.2017 |
 China: Shanghai - Singles - Main |
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| 1/16-finals | Nadal R. | Donaldson J. | 2:0 (6:2, 6:1) | details | 11.10.2017 |
| 1/32-finals | Donaldson J. | Cuevas P. | 2:1 (67:7, 6:4, 6:4) | details | 08.10.2017 |