Head-to-Head
Overview
Calvin Mueller and Fons Van Sambeek have met 1 time so far, all in 2026. Fons Van Sambeek leads 1–0. Their first encounter was at the 2026 M15 Forbach (R32), won by Fons Van Sambeek.
By surface
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Calvin Mueller and Fons Van Sambeek have met 1 time so far, all in 2026. Fons Van Sambeek leads 1–0. Their first encounter was at the 2026 M15 Forbach (R32), won by Fons Van Sambeek.