Round: 44 Ground: Hardcourt outdoor
| ITF Australia F8 | 2018/10/08 02:30 | Sadler, Olly v Brymer, Gage | 5-7,4-6 |
| ITF Australia F7 | 2018/10/02 02:00 | Farren, Connor v Sadler, Olly | 2-6,6-2,6-2 |
| ITF Australia F7 | 2018/10/01 00:00 | Sadler, Olly v Barclay, David | 6-4,6-1 |
| ITF Australia F7 | 2018/09/29 03:30 | Sadler, Olly v Chambers, Brenton | 7-6,6-1 |
| ITF Australia F6 | 2018/09/23 03:30 | Sadler, Olly v Sullivan, Jacob | 3-6,3-6 |
| ITF China F14 | 2018/08/30 05:05 | Sadler, Olly v Ranjeet Virali-Murugesan | 2-6,5-7 |
| ITF China F14 | 2018/08/28 04:40 | Peranamallur, Chandrasekhar Vignesh v Sadler, Olly | 2-6,3-6 |
| ITF China F13 | 2018/08/20 08:10 | Wang, Chukang v Sadler, Olly | 6-4,7-6 |