Head-to-Head
Overview
Kaspar Mathes and Lasse Poertner 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
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Kaspar Mathes and Lasse Poertner 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.