Daniel Willman advanced when Mark Nielsen retired 5-7 7-6 3-1 in the USA F26 qualifying round. Daniel Willman extended the head-to-head to 2–0.
Willman D. advanced when Nielsen M. retired.
Daniel Willman beat Mark Nielsen 5-7 7-6(1) 3-1 after Mark Nielsen retired. Umpiry, "Daniel Willman vs Mark Nielsen — USA F26 Qualifying Round", https://umpiry.com/match/2001-11-12/nielsen-vs-willman-usa-f26-qf?utm_source=cite (as of 12 November 2001).