Head-to-Head
Overview
Lasse Poertner and Kaspar Mathes have met 1 time so far, all in 2026. Lasse Poertner leads 1–0. Their first encounter was at the 2026 M15 Uslar (R32), won by Lasse Poertner.
By surface
- clay1 – 0
Lasse Poertner and Kaspar Mathes have met 1 time so far, all in 2026. Lasse Poertner leads 1–0. Their first encounter was at the 2026 M15 Uslar (R32), won by Lasse Poertner.