Portugal: Lisbon - Doubles - Main |
| 1/8-finals | Neis F./Vega Hernandez D. | Clayton S./O'Mara J. | 2:1 (6:2, 63:7, 10:6) | details | 15.05.2019 |
United Kingdom: Glasgow - Doubles - Main |
| Final | Clayton S./O'Mara J. | Granollers G./Olaso G. | 0:2 (1:6, 5:7) | details | 06.05.2018 |
| Semi-finals | Clayton S./O'Mara J. | Guez D./Mertens Y. | 2:0 (6:3, 6:2) | details | 05.05.2018 |
| Quarter-finals | Clayton S./O'Mara J. | Fruttero J./Sijsling I. | 2:0 (6:4, 6:2) | details | 03.05.2018 |
| 1/8-finals | Clayton S./O'Mara J. | Moriya H./Uchida K. | 2:1 (67:7, 6:2, 10:5) | details | 02.05.2018 |
Italy: Bergamo - Doubles - Main |
| Final | Grigelis L./Motti A. | Clayton S./O'Mara J. | 1:2 (7:5, 3:6, 13:15) | details | 24.02.2018 |
| Semi-finals | Junaid R./Zelenay I. | Clayton S./O'Mara J. | 1:2 (6:3, 65:7, 8:10) | details | 23.02.2018 |
| Quarter-finals | Clayton S./O'Mara J. | Arneodo R./Weissborn S. | 2:0 (6:3, 7:63) | details | 22.02.2018 |
| 1/8-finals | Bonzi B./Borsos G. | Clayton S./O'Mara J. | 0:2 (3:6, 64:7) | details | 21.02.2018 |
Hungary: Budapest - Doubles - Main |
| Quarter-finals | Auger-Aliassime F./Kuhn N. | Clayton S./O'Mara J. | 2:0 (7:5, 7:68) | details | 08.02.2018 |
| 1/8-finals | Balazs A./Borsos G. | Clayton S./O'Mara J. | 0:2 (3:6, 4:6) | details | 06.02.2018 |
France: Rennes - Doubles - Main |
| 1/8-finals | Clayton S./O'Mara J. | Brown D./Pel D. | 1:2 (4:6, 7:66, 8:10) | details | 23.01.2018 |
India: Bengaluru - Doubles - Main |
| 1/8-finals | Khabibulin T./Nedovyesov A. | Clayton S./O'Mara J. | 2:1 (6:4, 4:6, 10:7) | details | 21.11.2017 |
India: Pune - Doubles - Main |
| Semi-finals | Brkic T./Pavic A. | Clayton S./O'Mara J. | 2:0 (7:5, 6:4) | details | 17.11.2017 |
| Quarter-finals | Clayton S./O'Mara J. | Sabanov I./Sabanov M. | 2:0 (6:2, 6:4) | details | 15.11.2017 |
| 1/8-finals | Clayton S./O'Mara J. | Khabibulin T./Nedovyesov A. | 2:1 (6:3, 4:6, 10:8) | details | 14.11.2017 |
Germany: Ismaning - Doubles - Main |
| Semi-finals | Clayton S./O'Mara J. | Draganja M./Draganja T. | 1:2 (4:6, 6:4, 12:14) | details | 20.10.2017 |
| Quarter-finals | Hurkacz H./Zarichanskyi D. | Clayton S./O'Mara J. | 0:2 (4:6, 4:6) | details | 19.10.2017 |
| 1/8-finals | Clayton S./O'Mara J. | Altuna T./Michnev P. | 2:0 (6:1, 6:2) | details | 18.10.2017 |
Italy: Ortisei - Doubles - Main |
| Semi-finals | Clayton S./O'Mara J. | Jahn J./Leshem E. | 1:2 (64:7, 7:5, 11:13) | details | 13.10.2017 |
| Quarter-finals | Clayton S./O'Mara J. | Bednarek T./Pel D. | 2:0 (7:5, 7:65) | details | 12.10.2017 |
| 1/8-finals | Clayton S./O'Mara J. | Brown D./Puetz T. | 2:0 (7:61, 7:65) | details | 10.10.2017 |
Turkey: Izmir - Doubles - Main |
| Final | Molchanov D./Stakhovsky S. | Clayton S./O'Mara J. | WO. | details | 23.09.2017 |
| Semi-finals | Clayton S./O'Mara J. | Margaroli L./Miedler L. | 2:0 (6:4, 7:64) | details | 22.09.2017 |
| Quarter-finals | Silva C./Turini T. | Clayton S./O'Mara J. | 0:2 (65:7, 4:6) | details | 20.09.2017 |
| 1/8-finals | Milojevic N./Setkic A. | Clayton S./O'Mara J. | 0:2 (2:6, 3:6) | details | 18.09.2017 |
Turkey: Istanbul - Doubles - Main |
| Quarter-finals | Arneodo R./Nys H. | Clayton S./O'Mara J. | 2:1 (6:2, 5:7, 12:10) | details | 13.09.2017 |
| 1/8-finals | Clayton S./O'Mara J. | Basic M./Mertens Y. | 2:0 (6:4, 6:4) | details | 11.09.2017 |
Italy: Como - Doubles - Main |
| Quarter-finals | Clayton S./O'Mara J. | Behar A./Salisbury J. | 0:2 (62:7, 2:6) | details | 30.08.2017 |
| 1/8-finals | Sousa P./Vega Hernandez D. | Clayton S./O'Mara J. | 1:2 (6:2, 3:6, 6:10) | details | 29.08.2017 |
Germany: Meerbusch - Doubles - Main |
| Semi-finals | Clayton S./O'Mara J. | Krawietz K./Mies A. | 1:2 (7:5, 3:6, 8:10) | details | 18.08.2017 |
| Quarter-finals | Luetjen J./Maamoun K.M. | Clayton S./O'Mara J. | 1:2 (6:4, 1:6, 4:10) | details | 17.08.2017 |
| 1/8-finals | Greven M./Kahlke J. | Clayton S./O'Mara J. | 0:2 (1:6, 5:7) | details | 14.08.2017 |
Slovenia: Portoroz - Doubles - Main |
| 1/8-finals | Clayton S./O'Mara J. | Menendez-Maceiras A./Stakhovsky S. | 1:2 (6:3, 2:6, 9:11) | details | 07.08.2017 |
Spain: Segovia - Doubles - Main |
| Semi-finals | Clayton S./O'Mara J. | Menendez-Maceiras A./Stakhovsky S. | 0:2 (1:6, 4:6) | details | 04.08.2017 |
| Quarter-finals | Clayton S./O'Mara J. | Garin C./Martos Gornes S. | 2:1 (6:4, 1:6, 10:6) | details | 02.08.2017 |
| 1/8-finals | De Waard S./McLachlan B. | Clayton S./O'Mara J. | 0:2 (66:7, 2:6) | details | 01.08.2017 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/16-finals | Kontinen H./Peers J. | Clayton S./O'Mara J. | 3:0 (6:3, 6:4, 6:4) | details | 08.07.2017 |
| 1/32-finals | Lorenzi P./Mannarino A. | Clayton S./O'Mara J. | 0:1 RET. (65:7, 4:3) | details | 05.07.2017 |
United Kingdom: Eastbourne - Doubles - Main |
| 1/8-finals | Schwartzman D./Vesely J. | Clayton S./O'Mara J. | 2:1 (6:4, 3:6, 10:7) | details | 28.06.2017 |
United Kingdom: Nottingham - Doubles - Main |
| 1/8-finals | Copil M./Stakhovsky S. | Clayton S./O'Mara J. | 2:1 (7:63, 4:6, 10:7) | details | 12.06.2017 |