Juan Martin del Potro defeated Karen Khachanov 6-4 7-6 in the Beijing round of 16 on hard. The result followed the form book — Juan Martin del Potro came in leading the head-to-head 2–0, defending last year's round of 16. Juan Martin del Potro extended the head-to-head to 3–0.
del Potro J. took it in straight sets.
del Potro J. and Khachanov K. faced 16 of the same opponents in the last 12 months. del Potro J. went 16–6 (73%) against them, Khachanov K. 9–11 (45%). del Potro J. came out better against 4 of 14 comparable opponents, Khachanov K. against 1 — though 1 of those edges carries caveats (retirement).
Juan Martin del Potro beat Karen Khachanov 6-4 7-6. Umpiry, "Juan Martin del Potro vs Karen Khachanov — Beijing Round of 16", https://umpiry.com/match/2018-10-01/khachanov-vs-potro-beijing-r16?utm_source=cite (as of 1 October 2018).