Michael Mmoh defeated Karen Khachanov 7-6 7-6 in the Hong Kong round of 16 on hard. The upset overturned the form book — Karen Khachanov came in ranked #27. Michael Mmoh extended the head-to-head to 2–0.
Mmoh M. took it in straight sets.
Michael Mmoh beat Karen Khachanov 7-6 7-6. Umpiry, "Michael Mmoh vs Karen Khachanov — Hong Kong Round of 16", https://umpiry.com/match/2026-01-05/khachanov-vs-mmoh-hong-kong-r16?utm_source=cite (as of 5 January 2026).