Hanwen Li advanced when Nicolae Frunza retired 6-1 2-0 in the M15 Sofia 1 quarter-final.
Li H. advanced when Frunza N. retired.
Hanwen Li beat Nicolae Frunza 6-1 2-0 after Nicolae Frunza retired. Umpiry, "Hanwen Li vs Nicolae Frunza — M15 Sofia 1 Quarter-final", https://umpiry.com/match/2021-07-09/frunza-vs-li-m15-sofia-1-qf?utm_source=cite (as of 9 July 2021).