Results
| M25 Launceston | 03/02 06:10 | - | Duje Markovina v Stefan Kostic | 6-4,6-2 | |
| M25 Burnie | 02/23 05:03 | - | Jamie Mackenzie v Stefan Kostic | 6-2,6-2 | |
| UTR Pro Craigieburn | 12/17 01:45 | - |
Stefan Kostic v
Digital Chaos
|
4-6,3-6 | |
| UTR Pro Craigieburn | 12/16 01:35 | - | Stefan Kostic v Jera Staley | 6-3,1-6,4-6 | |
| UTR Pro Craigieburn | 12/16 01:10 | - | Stefan Kostic v Joshua Charlton | CANC | |
| UTR Pro Craigieburn | 12/15 03:00 | - | Stefan Kostic v Charlie Pade | 2-6,3-6 | |
| UTR Pro Craigieburn | 12/13 22:30 | - | Stefan Kostic v Lima/Lima | 4-6,3-6 | |
| UTR Pro Craigieburn | 12/13 02:00 | 29 | Stefan Kostic v Casey Ambler | 1-6,0-6 | |
| UTR Pro Craigieburn | 12/12 00:35 | 28 | Stefan Kostic v Chase Zhao | 6-4,6-4 | |
| UTR Pro Craigieburn | 12/11 03:40 | - |
Stefan Kostic v
Omar Jasika
|
4-6,2-6 | |
| UTR Pro Craigieburn | 12/09 01:50 | - | Stefan Kostic v Flynn Caruana | Retired | |
| UTR Pro Craigieburn | 12/08 02:35 | - | Stefan Kostic v Marcus Nield | 1-6,4-6 |
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