Stadium: Centre Court Round: 27 Ground: Hardcourt indoor
| Challenger - Glasgow - Doubles Hommes | 2018/05/02 17:30 | Clayton / O'Mara v Moriya H / Uchida K | 6-7,6-2,10-5 |
| Challenger Bergamo MD | 2018/02/24 15:30 | Grigelis L / Motti A v Clayton / O'Mara | 7-5,3-6,13-15 |
| Challenger Bergamo MD | 2018/02/23 11:10 | Junaid R / Zelenay I v Clayton / O'Mara | 6-3,6-7,8-10 |
| Challenger Bergamo MD | 2018/02/22 09:30 | Clayton / O'Mara v Arneodo/Weissborn | 6-3,7-6 |
| Challenger Budapest MD | 2018/02/08 17:00 | Auger Aliassime/Kuhn v Clayton / O'Mara | 7-5,7-6 |
| Challenger Budapest MD | 2018/02/06 16:00 | Balazs A / Borsos G v Clayton / O'Mara | 3-6,4-6 |
| Challenger Rennes MD | 2018/01/23 13:10 | Clayton / O'Mara v Brown D / Pel D | 4-6,7-6,8-10 |
| Challenger Bangalore MD | 2017/11/21 10:20 | Khabibulin T / Nedovyesov A v Clayton / O'Mara | 6-4,4-6,10-7 |
| Challenger - Glasgow - Doubles Hommes | 2018/05/01 15:10 | Glasspool L / Ward-Hibbert J v Fruttero J P / Sijsling I | 6-7,6-2,6-10 |