Stadium: Court 8 Round: 25 Ground: Clay
| Challenger Cary | 2020/11/10 15:30 | Mikael Torpegaard v William Blumberg | 3-6,6-3,6-4 |
| Exo-Tennis USA | 2020/05/15 16:35 | William Blumberg v Donald Young | 1-6,2-6 |
| Exo-Tennis USA | 2020/05/14 18:50 | Kevin King v William Blumberg | 7-5,6-4 |
| Exo-Tennis USA | 2020/05/14 15:25 | Korey Lovett v William Blumberg | 1-6,1-6 |
| ITF M15 Tallahassee | 2019/12/05 16:50 | William Blumberg v Guy Orly Iradukunda | 6-2,6-7,4-6 |
| ITF M15 Tallahassee | 2019/12/03 19:00 | Reese Stalder v William Blumberg | 2-6,4-6 |
| Challenger Champaign | 2019/11/12 17:35 | William Blumberg v Evan Song | 4-6,5-7 |
| Challenger Champaign | 2019/11/11 16:00 | Chris Wettengel v William Blumberg | 2-6,2-6 |
| ITF M15 Champaign | 2021/06/23 15:00 | Strong Kirchheimer v Connor Farren | 3-6,4-6 |
| ITF M25 Tulsa | 2021/06/16 17:10 | Strong Kirchheimer v Diego Hidalgo | 7-6,2-6,3-6 |
| Challenger Orlando | 2021/06/06 16:20 | Strong Kirchheimer v Nicolas Alvarez | 3-6,5-7 |
| Challenger Little Rock | 2021/05/31 15:00 | Stefan Kozlov v Strong Kirchheimer | 6-3,6-2 |
| Challenger Little Rock | 2021/05/30 19:40 | Strong Kirchheimer v Aleksandar Kovacevic | 6-4,6-7,7-6 |
| ITF M25 Pensacola | 2021/05/20 14:25 | Strong Kirchheimer v Nicolas Kicker | 6-4,5-7,2-6 |
| ITF M25 Pensacola | 2021/05/19 18:00 | Strong Kirchheimer v Ricardo Rodriguez-Pace | 6-4,6-3 |
| Challenger Tallahassee | 2021/04/19 16:45 | Alexander Ritschard v Strong Kirchheimer | 6-0,7-6 |