Head-to-Head
Overview
S. Waltert and T. Kostovic have met 1 time so far, all in 2026. S. Waltert leads 1–0. Their first encounter was at the 2026 Makarska (R32), won by S. Waltert.
By surface
- unknown1 – 0
S. Waltert and T. Kostovic have met 1 time so far, all in 2026. S. Waltert leads 1–0. Their first encounter was at the 2026 Makarska (R32), won by S. Waltert.