[232] Ryan Harrison 7-5,3-6,3-6 Stefan Kozlov [347] 2021-07-04 15:00
Stadium: Court 2 Round: 28 Ground: Clay
Home History
| ITF M15 Weston | 2021/07/03 18:00 | Gerardo L Villasenor v Ryan Harrison | 1-6,4-6 |
| ITF M15 Weston | 2021/07/02 21:10 | Ryan Harrison v Nicolas Mejia | 6-3,6-4 |
| ITF M15 Weston | 2021/07/01 13:00 | Ryan Harrison v Tom Jomby | 6-2,6-2 |
| Challenger Orlando | 2021/06/06 14:00 | Ryan Harrison v Nick Chappell | 2-6,6-7 |
| Challenger Little Rock | 2021/05/31 21:00 | Goncalo Oliveira v Ryan Harrison | 7-5,7-6 |
| Challenger Tallahassee | 2021/04/21 19:00 | Ryan Harrison v Michael Mmoh | 4-6,3-6 |
| Challenger Tallahassee | 2021/04/20 14:00 | Ryan Harrison v Donald Young | 2-6,6-3,6-3 |
| ATP Delray Beach | 2021/01/07 19:30 | Gianluca Mager v Ryan Harrison | 3-6,6-1,6-4 |
Away History
| ITF M15 Weston | 2021/07/03 17:15 | Stefan Kozlov v Christian Langmo | 6-2,7-5 |
| ITF M15 Weston | 2021/07/02 21:20 | Stefan Kozlov v Ben Shelton | 7-5,6-1 |
| ITF M15 Weston | 2021/07/02 21:00 | Stefan Kozlov v Ben Shelton | 7-5,6-1 |
| ITF M15 Weston | 2021/07/01 13:00 | Stefan Kozlov v Evan Zhu | 6-3,3-6,6-1 |
| ITF M25 Tulsa | 2021/06/16 23:30 | Michail Pervolarakis v Stefan Kozlov | 7-6,6-4 |
| Challenger Orlando | 2021/06/08 19:15 | Thiago Agustin Tirante v Stefan Kozlov | 6-3,6-1 |
| Challenger Orlando | 2021/06/07 14:00 | Adrian Andreev v Stefan Kozlov | 6-4,4-6,4-6 |
| Challenger Orlando | 2021/06/06 16:50 | Robert Galloway v Stefan Kozlov | 4-6,6-7 |