Emil Ruusuvuori defeated Pavel Kotov 6–3, 7–6 in the quarter-final of the ATP 250 Hong Kong tournament on hard court on 5 January 2024. Ruusuvuori, the pre-match favourite at odds of 1.64, delivered a composed performance to advance, controlling the first set before edging a competitive second-set tie-break. Kotov, despite entering at 2.42 odds, could not sustain the pressure required to upset the higher-ranked Finn. The victory keeps Ruusuvuori's title hopes intact in Hong Kong.