Ao Gai defeated Kwan Yau Ng 6-1 6-4 in the Hong Kong round of 32 on hard. The upset overturned the form book — Kwan Yau Ng came in defending last year's round of 32, but Ao Gai had been the form player, winning 2 of their last 8 on hard.
Gai A. took it in straight sets.
Ao Gai beat Kwan Yau Ng 6-1 6-4. Umpiry, "Ao Gai vs Kwan Yau Ng — Hong Kong Round of 32", https://umpiry.com/match/2018-06-19/gai-vs-ng-hong-kong-r32?utm_source=cite (as of 19 June 2018).