Isak Arvidsson advanced when Vladimir Polyakov retired 2-0 in the Estonia F4 round of 32.
Arvidsson I. advanced when Polyakov V. retired.
Isak Arvidsson beat Vladimir Polyakov 2-0 after Vladimir Polyakov retired. Umpiry, "Isak Arvidsson vs Vladimir Polyakov — Estonia F4 Round of 32", https://umpiry.com/match/2015-11-09/arvidsson-vs-polyakov-estonia-f4-r32?utm_source=cite (as of 9 November 2015).