Karen Khachanov defeated Attila Balazs 3-6 6-2 7-6 6-1 in the RUS vs HUN round robin on clay.
Khachanov K. came through in four sets.
Karen Khachanov beat Attila Balazs 3-6 6-2 7-6 6-1. Umpiry, "Karen Khachanov vs Attila Balazs — RUS vs HUN Round Robin", https://umpiry.com/match/2017-09-15/balazs-vs-khachanov-rus-vs-hun-rr?utm_source=cite (as of 15 September 2017).