[184] Jeffrey John Wolf 2-6,3-6 Stefan Kozlov [187] 2021-11-20 20:35
Stadium: Court 1 Round: 28 Ground: Hardcourt indoor
Head to Head
| Challenger Charlottesville | 2021/11/06 17:35 | Stefan Kozlov v Jeffrey John Wolf | 6-1,6-7,6-0 |
| Challenger Las Vegas | 2021/10/31 19:00 | Stefan Kozlov v Jeffrey John Wolf | 4-6,4-6 |
| Challenger Columbus | 2021/09/25 16:00 | Jeffrey John Wolf v Stefan Kozlov | 6-2,3-6,5-7 |
| Challenger Champaign | 2019/11/15 16:00 | Stefan Kozlov v Jeffrey John Wolf | 2-6,2-6 |
| Challenger Columbus | 2019/01/07 19:00 | Jeffrey John Wolf v Stefan Kozlov | 6-2,7-6 |
| ITF USA F13 | 2016/04/13 23:00 | Jeffrey John Wolf v Stefan Kozlov | 1-6,3-6 |
Home History
| Challenger Champaign | 2021/11/19 18:25 | Vasil Kirkov v Jeffrey John Wolf | 3-6,2-6 |
| Challenger Champaign | 2021/11/17 16:00 | Kaichi Uchida v Jeffrey John Wolf | 3-6,4-6 |
| Challenger Champaign | 2021/11/15 19:00 | Tatsuma Ito v Jeffrey John Wolf | 3-6,6-3,3-6 |
| Challenger Knoxville | 2021/11/09 15:00 | Christian Harrison v Jeffrey John Wolf | 6-2,6-3 |
| Challenger Charlottesville | 2021/11/06 17:35 | Stefan Kozlov v Jeffrey John Wolf | 6-1,6-7,6-0 |
| Challenger Charlottesville | 2021/11/05 19:25 | Jeffrey John Wolf v Thai-Son Kwiatkowski | 7-5,6-4 |
| Challenger Charlottesville | 2021/11/04 20:00 | Denis Kudla v Jeffrey John Wolf | 2-6,6-7 |
| Challenger Charlottesville | 2021/11/03 01:00 | Jeffrey John Wolf v Martin Damm | 7-5,6-4 |
Away History
| Challenger Champaign | 2021/11/19 20:50 | Stefan Kozlov v Mitchell Krueger | 6-4,6-4 |
| Challenger Champaign | 2021/11/17 17:25 | Stefan Kozlov v Keegan Smith | 6-3,6-1 |
| Challenger Champaign | 2021/11/15 22:30 | Stefan Kozlov v JC Aragone | 3-6,6-3,6-4 |
| Challenger Knoxville | 2021/11/12 00:40 | Aidan Mchugh v Stefan Kozlov | 6-4,6-4 |
| Challenger Knoxville | 2021/11/10 00:20 | Aleksandar Vukic v Stefan Kozlov | 3-6,6-4,5-7 |
| Challenger Charlottesville | 2021/11/07 18:00 | Stefan Kozlov v Aleksandar Vukic | 6-2,6-3 |
| Challenger Charlottesville | 2021/11/06 17:35 | Stefan Kozlov v Jeffrey John Wolf | 6-1,6-7,6-0 |
| Challenger Charlottesville | 2021/11/05 17:55 | Emilio Nava v Stefan Kozlov | 4-6,2-6 |