Khachanov broke for 4-3 after Bublik saved three break points in a hold for 3-2, then held for 6-4 to take the set.

Bublik and Khachanov held serve throughout, Khachanov saving a break point in a 6 minute hold for 1-1, before Bublik won the tiebreak.

Khachanov saved two break points in a hold for 4-3 but Bublik held for 6-6 and won a 9 minute tiebreak to take the set.