Nikolaj Katic defeated Alexey Dubinin 6-2 6-1 in the M15 Doha 1 qualifying round of 32 on hard.
Katic N. took it in straight sets.
Nikolaj Katic beat Alexey Dubinin 6-2 6-1. Umpiry, "Nikolaj Katic vs Alexey Dubinin — M15 Doha 1 Qualifying Round of 32", https://umpiry.com/match/2021-10-03/dubinin-vs-katic-m15-doha-1-q32?utm_source=cite (as of 3 October 2021).