Head-to-Head
Overview
Calvin Mueller and M. A. Erhardt have met 1 time so far, all in 2026. Calvin Mueller leads 1–0. Their first encounter was at the 2026 M15 Allershausen (R16), won by Calvin Mueller.
By surface
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Calvin Mueller and M. A. Erhardt have met 1 time so far, all in 2026. Calvin Mueller leads 1–0. Their first encounter was at the 2026 M15 Allershausen (R16), won by Calvin Mueller.