Sem Verbeek advanced when Louis Wessels retired 7-6 in the M15 Alkmaar 1 round of 32.
Verbeek S. advanced when Wessels L. retired.
Sem Verbeek beat Louis Wessels 7-6(0) after Louis Wessels retired. Umpiry, "Sem Verbeek vs Louis Wessels — M15 Alkmaar 1 Round of 32", https://umpiry.com/match/2020-08-26/verbeek-vs-wessels-m15-alkmaar-1-r32?utm_source=cite (as of 26 August 2020).