Martin Borisiouk defeated Alexey Dubinin 6-2 6-4 in the M15 Kazan 3 qualifying round of 16 on hard.
Borisiouk M. took it in straight sets.
Martin Borisiouk beat Alexey Dubinin 6-2 6-4. Umpiry, "Martin Borisiouk vs Alexey Dubinin — M15 Kazan 3 Qualifying Round of 16", https://umpiry.com/match/2021-11-23/borisiouk-vs-dubinin-m15-kazan-3-q16?utm_source=cite (as of 23 November 2021).