K. Feldbausch leads the all-time head-to-head 2-0 against D. Vallejo, over 2 matches.
| Surface | K. Feldbausch | D. Vallejo |
|---|---|---|
| Clay | 2 | 0 |
| Date | Winner | Score | Event |
|---|---|---|---|
| July 21, 2026 | K. Feldbausch | 0 - 2 | Kitzbuhel · 1/16-finals · clay |
| March 11, 2025 | K. Feldbausch | 2 - 0 | Santiago · 1/16-finals · clay |