Head to Head includes singles and doubles results.
| 04/24/24 | Frank Krieger over Brian Nelson | 6-0; 2-6; 6-4 | |
| 11/29/23 | Frank Krieger over Brian Nelson | 6-4; 1-6; 6-3 | |
| 10/27/23 | Frank Krieger over Brian Nelson | 6-3; 6-1 | |
| 08/28/23 | Frank Krieger over Brian Nelson | 6-2; 6-7; 6-3 | |
| 04/07/22 | Brian Nelson over Frank Krieger | 7-6; 6-3 | |
| 03/10/22 | Brian Nelson over Frank Krieger | 6-4; 6-4 | |
| 03/07/22 | Brian Nelson over Frank Krieger | 6-3; 6-4 | |
| 10/07/21 | Brian Nelson over Frank Krieger | 6-3; 3-6; 6-4 |
