I. Buse leads the all-time head-to-head 2-0 against K. Feldbausch, over 2 matches.
| Surface | K. Feldbausch | I. Buse |
|---|---|---|
| Clay | 0 | 2 |
| Date | Winner | Score | Event |
|---|---|---|---|
| July 22, 2026 | I. Buse | 1 - 2 | Kitzbuhel · 1/8-finals · clay |
| March 13, 2025 | I. Buse | 2 - 0 | Santiago · 1/8-finals · clay |